TY  - JOUR
AU  - Malesevic, Aleksandar
AU  - Radojkovic, Aleksandar
AU  - Zunic, Milan
AU  - Dapčević, Aleksandra
AU  - Perac, Sanja
AU  - Branković, Zorica
AU  - Brankovic, Goran
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4993
AB  - The properties of BaCe1-xInxO3-delta (x = 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, and 0.40) as proton conducting electrolyte are examined. The dense electrolyte is formed after sintering at 1300 degrees C for 5 h in air. The samples with In content > 25 mol% contain In2O3 as a secondary phase. The highest total conductivity is around 5x10(-3) S/cm for BaCe0.75In0.25O3-delta in the wet hydrogen atmosphere at 700 degrees C. After exposure to pure CO2 atmosphere at 700 degrees C for 5 h, the concentrations of at least 15 mol% In can completely suppress degradation of the electrolyte. The power density of Ni-BaCe0.75In0.25O3-delta/BaCe0.75In0.25O3-delta/LSCF-BaCe0.75In0.25O3-delta fuel cell tested in wet hydrogen atmosphere reaches 264 mW/cm(2) at 700 degrees C. This result is an indication of stability and functionality of this electrolyte and its versatility in respect to type of fuel and performing environment.
T2  - Journal of Advanced Ceramics
T1  - Evaluation of stability and functionality of BaCe1-xInxO3-delta electrolyte in a wider range of indium concentration
EP  - 453
IS  - 3
SP  - 443
VL  - 11
DO  - 10.1007/s40145-021-0547-1
ER  - 

@article{
author = "Malesevic, Aleksandar and Radojkovic, Aleksandar and Zunic, Milan and Dapčević, Aleksandra and Perac, Sanja and Branković, Zorica and Brankovic, Goran",
year = "2022",
abstract = "The properties of BaCe1-xInxO3-delta (x = 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, and 0.40) as proton conducting electrolyte are examined. The dense electrolyte is formed after sintering at 1300 degrees C for 5 h in air. The samples with In content > 25 mol% contain In2O3 as a secondary phase. The highest total conductivity is around 5x10(-3) S/cm for BaCe0.75In0.25O3-delta in the wet hydrogen atmosphere at 700 degrees C. After exposure to pure CO2 atmosphere at 700 degrees C for 5 h, the concentrations of at least 15 mol% In can completely suppress degradation of the electrolyte. The power density of Ni-BaCe0.75In0.25O3-delta/BaCe0.75In0.25O3-delta/LSCF-BaCe0.75In0.25O3-delta fuel cell tested in wet hydrogen atmosphere reaches 264 mW/cm(2) at 700 degrees C. This result is an indication of stability and functionality of this electrolyte and its versatility in respect to type of fuel and performing environment.",
journal = "Journal of Advanced Ceramics",
title = "Evaluation of stability and functionality of BaCe1-xInxO3-delta electrolyte in a wider range of indium concentration",
pages = "453-443",
number = "3",
volume = "11",
doi = "10.1007/s40145-021-0547-1"
}

Malesevic, A., Radojkovic, A., Zunic, M., Dapčević, A., Perac, S., Branković, Z.,& Brankovic, G.. (2022). Evaluation of stability and functionality of BaCe1-xInxO3-delta electrolyte in a wider range of indium concentration. in Journal of Advanced Ceramics, 11(3), 443-453.
https://doi.org/10.1007/s40145-021-0547-1

Malesevic A, Radojkovic A, Zunic M, Dapčević A, Perac S, Branković Z, Brankovic G. Evaluation of stability and functionality of BaCe1-xInxO3-delta electrolyte in a wider range of indium concentration. in Journal of Advanced Ceramics. 2022;11(3):443-453.
doi:10.1007/s40145-021-0547-1 .

Malesevic, Aleksandar, Radojkovic, Aleksandar, Zunic, Milan, Dapčević, Aleksandra, Perac, Sanja, Branković, Zorica, Brankovic, Goran, "Evaluation of stability and functionality of BaCe1-xInxO3-delta electrolyte in a wider range of indium concentration" in Journal of Advanced Ceramics, 11, no. 3 (2022):443-453,
https://doi.org/10.1007/s40145-021-0547-1 . .

TY  - JOUR
AU  - Tasic, Nikola
AU  - Cirković, Jovana
AU  - Ribic, Vesna
AU  - Zunic, Milan
AU  - Dapčević, Aleksandra
AU  - Brankovic, Goran
AU  - Branković, Zorica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4999
AB  - We present the synthesis and photocatalytic properties of mixed-phase TiO2 nanoparticles decorated with silver nanodots obtained by environmental-friendly wet chemical method using low molecular weight chitosan as the silver reducing agent. Structural analysis of synthesized Ag nanoparticles revealed that they crystallized in a rare hexagonal modification. High-resolution transmission electron microscopy study shows that   lt 3-nm hexagonal-Ag nanoparticles are implanted on the surface of   lt 20-nm anatase grains. Compared to Ag-free TiO2 powders, implantation with Ag results in important increase in visible light absorption. The photocatalytic activity of the samples was measured by monitoring decolorization of concentrated textile dye solution (50 mg L-1 of Reactive Orange 16) under simulated solar irradiation of 280 W m(-2). The optimum photocatalytic properties are achieved with 5 wt% of silver. Based on the collected results, the operating mechanism of the degradation process is suggested, and the effects of the silver addition are explained.
T2  - Journal of the American Ceramic Society
T1  - Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2
EP  - 347
IS  - 1
SP  - 336
VL  - 105
DO  - 10.1111/jace.18059
ER  - 

@article{
author = "Tasic, Nikola and Cirković, Jovana and Ribic, Vesna and Zunic, Milan and Dapčević, Aleksandra and Brankovic, Goran and Branković, Zorica",
year = "2022",
abstract = "We present the synthesis and photocatalytic properties of mixed-phase TiO2 nanoparticles decorated with silver nanodots obtained by environmental-friendly wet chemical method using low molecular weight chitosan as the silver reducing agent. Structural analysis of synthesized Ag nanoparticles revealed that they crystallized in a rare hexagonal modification. High-resolution transmission electron microscopy study shows that   lt 3-nm hexagonal-Ag nanoparticles are implanted on the surface of   lt 20-nm anatase grains. Compared to Ag-free TiO2 powders, implantation with Ag results in important increase in visible light absorption. The photocatalytic activity of the samples was measured by monitoring decolorization of concentrated textile dye solution (50 mg L-1 of Reactive Orange 16) under simulated solar irradiation of 280 W m(-2). The optimum photocatalytic properties are achieved with 5 wt% of silver. Based on the collected results, the operating mechanism of the degradation process is suggested, and the effects of the silver addition are explained.",
journal = "Journal of the American Ceramic Society",
title = "Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2",
pages = "347-336",
number = "1",
volume = "105",
doi = "10.1111/jace.18059"
}

Tasic, N., Cirković, J., Ribic, V., Zunic, M., Dapčević, A., Brankovic, G.,& Branković, Z.. (2022). Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2. in Journal of the American Ceramic Society, 105(1), 336-347.
https://doi.org/10.1111/jace.18059

Tasic N, Cirković J, Ribic V, Zunic M, Dapčević A, Brankovic G, Branković Z. Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2. in Journal of the American Ceramic Society. 2022;105(1):336-347.
doi:10.1111/jace.18059 .

Tasic, Nikola, Cirković, Jovana, Ribic, Vesna, Zunic, Milan, Dapčević, Aleksandra, Brankovic, Goran, Branković, Zorica, "Effects of the silver nanodots on the photocatalytic activity of mixed-phase TiO2" in Journal of the American Ceramic Society, 105, no. 1 (2022):336-347,
https://doi.org/10.1111/jace.18059 . .

TY  - JOUR
AU  - Zemljak, Olivera
AU  - Golić Luković, Danijela
AU  - Počuča-Nešić, Milica
AU  - Dapčević, Aleksandra
AU  - Šenjug, Pavla
AU  - Pajić, Damir
AU  - Radošević, Tina
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5204
AB  - Yttrium manganite, YMnO3, was doped with different concentrations of titanium (x = 0, 0.04, 0.08, 0.10, 0.15, 0.20) in order to improve the microstructural and multiferroic properties. The powders were prepared using sol-gel polymerization complex method from citrate precursors. Depending on the titanium concentration, the hexagonal structure and/or the rhombohedral superstructure are present in the sintered samples. The YMn1–xTixO3+δ (x = 0.10, 0.15, 0.20) ceramic samples showed significantly reduced density of microcracks, and of inter- and intragranular pores, and relative densities greater than 90%. The structural parameters for YMn1–xTixO3+δ (x = 0, 0.10, 0.15) were correlated with the results of magnetic and ferroelectric measurements. The most of titanium-doped samples showed a reduction of the leakage current density in comparison with undoped YMnO3, and their ferroelectric responses were slightly improved. The modifications in structural arrangement resulted in partial suppression of ideal antiferromagnetic ordering visible through decrease of the Néel temperature and Weiss parameter, as well as the appearance of weak ferromagnetism and increase of magnetization (especially, in samples x = 0.08, 0.10, 0.15). These changes in physical quantities most likely originated from incorporation of the uncompensated magnetic moments and possible spin canting induced by enhanced symmetry break of the superexchange bridges.
PB  - Springer
T2  - Journal of Sol-Gel Science and Technology
T1  - Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties
EP  - 819
IS  - 3
SP  - 807
VL  - 103
DO  - 10.1007/s10971-022-05872-3
ER  - 

@article{
author = "Zemljak, Olivera and Golić Luković, Danijela and Počuča-Nešić, Milica and Dapčević, Aleksandra and Šenjug, Pavla and Pajić, Damir and Radošević, Tina and Branković, Goran and Branković, Zorica",
year = "2022",
abstract = "Yttrium manganite, YMnO3, was doped with different concentrations of titanium (x = 0, 0.04, 0.08, 0.10, 0.15, 0.20) in order to improve the microstructural and multiferroic properties. The powders were prepared using sol-gel polymerization complex method from citrate precursors. Depending on the titanium concentration, the hexagonal structure and/or the rhombohedral superstructure are present in the sintered samples. The YMn1–xTixO3+δ (x = 0.10, 0.15, 0.20) ceramic samples showed significantly reduced density of microcracks, and of inter- and intragranular pores, and relative densities greater than 90%. The structural parameters for YMn1–xTixO3+δ (x = 0, 0.10, 0.15) were correlated with the results of magnetic and ferroelectric measurements. The most of titanium-doped samples showed a reduction of the leakage current density in comparison with undoped YMnO3, and their ferroelectric responses were slightly improved. The modifications in structural arrangement resulted in partial suppression of ideal antiferromagnetic ordering visible through decrease of the Néel temperature and Weiss parameter, as well as the appearance of weak ferromagnetism and increase of magnetization (especially, in samples x = 0.08, 0.10, 0.15). These changes in physical quantities most likely originated from incorporation of the uncompensated magnetic moments and possible spin canting induced by enhanced symmetry break of the superexchange bridges.",
publisher = "Springer",
journal = "Journal of Sol-Gel Science and Technology",
title = "Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties",
pages = "819-807",
number = "3",
volume = "103",
doi = "10.1007/s10971-022-05872-3"
}

Zemljak, O., Golić Luković, D., Počuča-Nešić, M., Dapčević, A., Šenjug, P., Pajić, D., Radošević, T., Branković, G.,& Branković, Z.. (2022). Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties. in Journal of Sol-Gel Science and Technology
Springer., 103(3), 807-819.
https://doi.org/10.1007/s10971-022-05872-3

Zemljak O, Golić Luković D, Počuča-Nešić M, Dapčević A, Šenjug P, Pajić D, Radošević T, Branković G, Branković Z. Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties. in Journal of Sol-Gel Science and Technology. 2022;103(3):807-819.
doi:10.1007/s10971-022-05872-3 .

Zemljak, Olivera, Golić Luković, Danijela, Počuča-Nešić, Milica, Dapčević, Aleksandra, Šenjug, Pavla, Pajić, Damir, Radošević, Tina, Branković, Goran, Branković, Zorica, "Titanium doped yttrium manganite: improvement of microstructural properties and peculiarities of multiferroic properties" in Journal of Sol-Gel Science and Technology, 103, no. 3 (2022):807-819,
https://doi.org/10.1007/s10971-022-05872-3 . .

TY  - JOUR
AU  - Vukašinović, Jelena
AU  - Počuča-Nešić, Milica
AU  - Luković-Golić, Danijela
AU  - Ribić, Vesna
AU  - Branković, Zorica
AU  - Savić, Slavica M.
AU  - Dapčević, Aleksandra
AU  - Bernik, Slavko
AU  - Podlogar, Matejka
AU  - Kocen, Matej
AU  - Rapljenović, Željko
AU  - Ivek, Tomislav
AU  - Lazović, Vladimir
AU  - Dojčinović, Biljana
AU  - Branković, Goran
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4403
AB  - Antimony doped barium-stannate dense ceramic materials were synthesized using spark plasma sintering technique out of mechanically activated precursor powders. The influence of various Sb concentrations (x = 0.00 - 0.10) on properties of BaSn1-xSbxO3 ceramics was investigated. Relative densities of prepared samples were in the range of (79-96) %. TEM analysis revealed the presence of many dislocations in undoped BaSnO3, and their significant reduction upon doping with Sb. All samples except BaSn0.92Sb0.08O3 exhibit non-linear I-U characteristic, typical for semiconductors with potential barrier at grain boundaries. Low angle grain boundaries found only in BaSn0.92Sb0.08O3 caused the loss of potential barrier at grain boundaries which was confirmed by AC impedance spectroscopy measurements. Consequently, BaSn0.92Sb0.08O3 showed the lowest electrical resistivity and linear I-U characteristic. UV-vis analysis confirmed the increasing of band gap (Burstein-Moss shift) values in all doped samples.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics
EP  - 5575
IS  - 15
SP  - 5566
VL  - 40
DO  - 10.1016/j.jeurceramsoc.2020.06.062
ER  - 

@article{
author = "Vukašinović, Jelena and Počuča-Nešić, Milica and Luković-Golić, Danijela and Ribić, Vesna and Branković, Zorica and Savić, Slavica M. and Dapčević, Aleksandra and Bernik, Slavko and Podlogar, Matejka and Kocen, Matej and Rapljenović, Željko and Ivek, Tomislav and Lazović, Vladimir and Dojčinović, Biljana and Branković, Goran",
year = "2020",
abstract = "Antimony doped barium-stannate dense ceramic materials were synthesized using spark plasma sintering technique out of mechanically activated precursor powders. The influence of various Sb concentrations (x = 0.00 - 0.10) on properties of BaSn1-xSbxO3 ceramics was investigated. Relative densities of prepared samples were in the range of (79-96) %. TEM analysis revealed the presence of many dislocations in undoped BaSnO3, and their significant reduction upon doping with Sb. All samples except BaSn0.92Sb0.08O3 exhibit non-linear I-U characteristic, typical for semiconductors with potential barrier at grain boundaries. Low angle grain boundaries found only in BaSn0.92Sb0.08O3 caused the loss of potential barrier at grain boundaries which was confirmed by AC impedance spectroscopy measurements. Consequently, BaSn0.92Sb0.08O3 showed the lowest electrical resistivity and linear I-U characteristic. UV-vis analysis confirmed the increasing of band gap (Burstein-Moss shift) values in all doped samples.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics",
pages = "5575-5566",
number = "15",
volume = "40",
doi = "10.1016/j.jeurceramsoc.2020.06.062"
}

Vukašinović, J., Počuča-Nešić, M., Luković-Golić, D., Ribić, V., Branković, Z., Savić, S. M., Dapčević, A., Bernik, S., Podlogar, M., Kocen, M., Rapljenović, Ž., Ivek, T., Lazović, V., Dojčinović, B.,& Branković, G.. (2020). The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 40(15), 5566-5575.
https://doi.org/10.1016/j.jeurceramsoc.2020.06.062

Vukašinović J, Počuča-Nešić M, Luković-Golić D, Ribić V, Branković Z, Savić SM, Dapčević A, Bernik S, Podlogar M, Kocen M, Rapljenović Ž, Ivek T, Lazović V, Dojčinović B, Branković G. The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics. in Journal of the European Ceramic Society. 2020;40(15):5566-5575.
doi:10.1016/j.jeurceramsoc.2020.06.062 .

Vukašinović, Jelena, Počuča-Nešić, Milica, Luković-Golić, Danijela, Ribić, Vesna, Branković, Zorica, Savić, Slavica M., Dapčević, Aleksandra, Bernik, Slavko, Podlogar, Matejka, Kocen, Matej, Rapljenović, Željko, Ivek, Tomislav, Lazović, Vladimir, Dojčinović, Biljana, Branković, Goran, "The structural, electrical and optical properties of spark plasma sintered BaSn1-xSbxO3 ceramics" in Journal of the European Ceramic Society, 40, no. 15 (2020):5566-5575,
https://doi.org/10.1016/j.jeurceramsoc.2020.06.062 . .

TY  - JOUR
AU  - Luković-Golić, Danijela
AU  - Radojković, Aleksandar
AU  - Dapčević, Aleksandra
AU  - Pajić, Damir
AU  - Dragović, Jure
AU  - Torić, Filip
AU  - Ćirković, Jovana
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4079
AB  - Bismuth ferrite, BiFeO3, was doped with a wide range of concentrations (0-30%) of Gd in order to investigate structural, ferroelectric, and magnetic properties and their correlation. Powder samples of Bi1-xGdxFeO3 (x = 0.00-0.30) were prepared using the hydro-evaporation synthesis method. Sintering process at 870 degrees C for 6 h of as-prepared, Gd doped BiFeO3 powders resulted in ceramic samples with relative densities in the range of (74-86) %. XRD analysis revealed that Bi1-xGdxFeO3 samples (x = 0.00-0.09) crystallized in rhombohedral phase; Bi1-xGdxFeO3 samples (x = 0.10-0.20) contained both rhombohedral and orthorhombic phases, while Bi1-xGdxFeO3 (x = 0.30) sample contained only the orthorhombic phase. The structural parameters obtained after Rietveld refinement for single-phase Bi1-xGdxFeO3 ceramic samples and microstructure image analysis were correlated with the results of ferroelectric and magnetic measurements. Bi1-xGdxFeO3 (x = 0.0625, 0.075, 0.09) samples showed improved ferroelectric properties and reduced leakage current density in comparison with undoped BiFeO3. Gradual increase in Gd content in BiFeO3 led to enhanced magnetic responses and weak ferromagnetic behavior.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium
EP  - 19165
IS  - 15
SP  - 19158
VL  - 45
DO  - 10.1016/j.ceramint.2019.06.162
ER  - 

@article{
author = "Luković-Golić, Danijela and Radojković, Aleksandar and Dapčević, Aleksandra and Pajić, Damir and Dragović, Jure and Torić, Filip and Ćirković, Jovana and Branković, Goran and Branković, Zorica",
year = "2019",
abstract = "Bismuth ferrite, BiFeO3, was doped with a wide range of concentrations (0-30%) of Gd in order to investigate structural, ferroelectric, and magnetic properties and their correlation. Powder samples of Bi1-xGdxFeO3 (x = 0.00-0.30) were prepared using the hydro-evaporation synthesis method. Sintering process at 870 degrees C for 6 h of as-prepared, Gd doped BiFeO3 powders resulted in ceramic samples with relative densities in the range of (74-86) %. XRD analysis revealed that Bi1-xGdxFeO3 samples (x = 0.00-0.09) crystallized in rhombohedral phase; Bi1-xGdxFeO3 samples (x = 0.10-0.20) contained both rhombohedral and orthorhombic phases, while Bi1-xGdxFeO3 (x = 0.30) sample contained only the orthorhombic phase. The structural parameters obtained after Rietveld refinement for single-phase Bi1-xGdxFeO3 ceramic samples and microstructure image analysis were correlated with the results of ferroelectric and magnetic measurements. Bi1-xGdxFeO3 (x = 0.0625, 0.075, 0.09) samples showed improved ferroelectric properties and reduced leakage current density in comparison with undoped BiFeO3. Gradual increase in Gd content in BiFeO3 led to enhanced magnetic responses and weak ferromagnetic behavior.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium",
pages = "19165-19158",
number = "15",
volume = "45",
doi = "10.1016/j.ceramint.2019.06.162"
}

Luković-Golić, D., Radojković, A., Dapčević, A., Pajić, D., Dragović, J., Torić, F., Ćirković, J., Branković, G.,& Branković, Z.. (2019). Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(15), 19158-19165.
https://doi.org/10.1016/j.ceramint.2019.06.162

Luković-Golić D, Radojković A, Dapčević A, Pajić D, Dragović J, Torić F, Ćirković J, Branković G, Branković Z. Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium. in Ceramics International. 2019;45(15):19158-19165.
doi:10.1016/j.ceramint.2019.06.162 .

Luković-Golić, Danijela, Radojković, Aleksandar, Dapčević, Aleksandra, Pajić, Damir, Dragović, Jure, Torić, Filip, Ćirković, Jovana, Branković, Goran, Branković, Zorica, "Change in structural, ferroelectric, and magnetic properties of bismuth ferrite induced by doping with gadolinium" in Ceramics International, 45, no. 15 (2019):19158-19165,
https://doi.org/10.1016/j.ceramint.2019.06.162 . .

TY  - JOUR
AU  - Pocuca-Nesić, Milica
AU  - Marinković-Stanojević, Zorica
AU  - Cotić-Smole, Patricia
AU  - Dapčević, Aleksandra
AU  - Tasić, Nikola
AU  - Branković, Goran
AU  - Branković, Zorica
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4138
AB  - Yttrium manganite (YMnO3) is widely investigated multiferroic material with potential use in many technological applications. In this paper, we report on the preparation and characterization of multiferroic hexagonal YMnO3 ceramics obtained by chemical synthesis route. Precursor powders were prepared by the polymerizable complex method from citrate precursors. After calcination at 900 degrees C the powders contained mixture of Y-Mn-O phases which were further sintered at different temperatures. XRD analysis revealed that sintering at 1400 degrees C resulted in the formation of pure hexagonal YMnO3. Density of the obtained ceramics was 96 %TD. The ceramic samples proved to have multiferroic properties - they are antiferromagnetic below 42 K with linear dependence of magnetization as a function of applied magnetic field. The ferroelectric measurements performed at room temperature showed remanent polarization of 0.21 mu C/cm(2) and the coercive field of 6.0 kV/cm for the YMnO3 sample sintered at 1400 degrees C. The magnetization curves measured at 2 and 5 K for the powder samples calcined at 900 degrees C and ceramic samples sintered at 1300 degrees C exhibited a hysteresis loop due to a small concentration of Mn3O4 in the samples.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Processing and properties of pure antiferromagnetic h-YMnO3
EP  - 434
IS  - 4
SP  - 427
VL  - 13
DO  - 10.2298/PAC1904427P
ER  - 

@article{
author = "Pocuca-Nesić, Milica and Marinković-Stanojević, Zorica and Cotić-Smole, Patricia and Dapčević, Aleksandra and Tasić, Nikola and Branković, Goran and Branković, Zorica",
year = "2019",
abstract = "Yttrium manganite (YMnO3) is widely investigated multiferroic material with potential use in many technological applications. In this paper, we report on the preparation and characterization of multiferroic hexagonal YMnO3 ceramics obtained by chemical synthesis route. Precursor powders were prepared by the polymerizable complex method from citrate precursors. After calcination at 900 degrees C the powders contained mixture of Y-Mn-O phases which were further sintered at different temperatures. XRD analysis revealed that sintering at 1400 degrees C resulted in the formation of pure hexagonal YMnO3. Density of the obtained ceramics was 96 %TD. The ceramic samples proved to have multiferroic properties - they are antiferromagnetic below 42 K with linear dependence of magnetization as a function of applied magnetic field. The ferroelectric measurements performed at room temperature showed remanent polarization of 0.21 mu C/cm(2) and the coercive field of 6.0 kV/cm for the YMnO3 sample sintered at 1400 degrees C. The magnetization curves measured at 2 and 5 K for the powder samples calcined at 900 degrees C and ceramic samples sintered at 1300 degrees C exhibited a hysteresis loop due to a small concentration of Mn3O4 in the samples.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Processing and properties of pure antiferromagnetic h-YMnO3",
pages = "434-427",
number = "4",
volume = "13",
doi = "10.2298/PAC1904427P"
}

Pocuca-Nesić, M., Marinković-Stanojević, Z., Cotić-Smole, P., Dapčević, A., Tasić, N., Branković, G.,& Branković, Z.. (2019). Processing and properties of pure antiferromagnetic h-YMnO3. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 13(4), 427-434.
https://doi.org/10.2298/PAC1904427P

Pocuca-Nesić M, Marinković-Stanojević Z, Cotić-Smole P, Dapčević A, Tasić N, Branković G, Branković Z. Processing and properties of pure antiferromagnetic h-YMnO3. in Processing and Application of Ceramics. 2019;13(4):427-434.
doi:10.2298/PAC1904427P .

Pocuca-Nesić, Milica, Marinković-Stanojević, Zorica, Cotić-Smole, Patricia, Dapčević, Aleksandra, Tasić, Nikola, Branković, Goran, Branković, Zorica, "Processing and properties of pure antiferromagnetic h-YMnO3" in Processing and Application of Ceramics, 13, no. 4 (2019):427-434,
https://doi.org/10.2298/PAC1904427P . .

TY  - JOUR
AU  - Radović, Marko N.
AU  - Adamović, Tijana
AU  - Pavlović, Jelena
AU  - Rusmirović, Jelena
AU  - Tadić, Vanja
AU  - Branković, Zorica
AU  - Ivanović, Jasna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4232
AB  - Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing dove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 degrees C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt. %, scCO(2) pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch(50:50)) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/g(film)) without an adverse effect on morphological properties. The G/Ch(50:50) film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch(50:50) and its interaction with the film. Plasticizing effect of scCO(2) and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/g(film) into the G/Ch(50:50) didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 degrees C, which is suitable for most of food packaging applications.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof
EP  - 130
IS  - 2
SP  - 119
VL  - 25
DO  - 10.2298/CICEQ180323025R
ER  - 

@article{
author = "Radović, Marko N. and Adamović, Tijana and Pavlović, Jelena and Rusmirović, Jelena and Tadić, Vanja and Branković, Zorica and Ivanović, Jasna",
year = "2019",
abstract = "Supercritical CO2 impregnation process was used for the first time to fabricate biodegradable gelatin-chitosan (G/Ch) films containing dove oil (CO) for potential use in active food packaging. All the impregnations were carried out at moderately low temperature (40 degrees C). Aiming to maximize CO loading in the films with acceptable morphological, structural and thermal properties, CO2 pressure, impregnation time and G:Ch mass ratio were varied. Gelatin fraction in the films of 25-50 wt. %, scCO(2) pressures of 10-20 MPa and impregnation time of 2-6 h impregnation favoured the CO loading. Processing of the film with equal gelatin to chitosan mass ratio (G/Ch(50:50)) at 10 MPa for 2 h yielded sufficiently high loading (56 mg CO/g(film)) without an adverse effect on morphological properties. The G/Ch(50:50) film was therefore chosen for structural and thermal analyses. ATR-FTIR analysis confirmed successful CO incorporation into the G/Ch(50:50) and its interaction with the film. Plasticizing effect of scCO(2) and CO on the film was evidenced by DSC. Incorporation of 56 mg CO/g(film) into the G/Ch(50:50) didn't affect thermal stability of the film. Beside environmental benefits, supercritical impregnation process enables fast fabrication of G/Ch bio-composite films containing CO, thermally stable to 110 degrees C, which is suitable for most of food packaging applications.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof",
pages = "130-119",
number = "2",
volume = "25",
doi = "10.2298/CICEQ180323025R"
}

Radović, M. N., Adamović, T., Pavlović, J., Rusmirović, J., Tadić, V., Branković, Z.,& Ivanović, J.. (2019). Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 25(2), 119-130.
https://doi.org/10.2298/CICEQ180323025R

Radović MN, Adamović T, Pavlović J, Rusmirović J, Tadić V, Branković Z, Ivanović J. Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof. in Chemical Industry & Chemical Engineering Quarterly. 2019;25(2):119-130.
doi:10.2298/CICEQ180323025R .

Radović, Marko N., Adamović, Tijana, Pavlović, Jelena, Rusmirović, Jelena, Tadić, Vanja, Branković, Zorica, Ivanović, Jasna, "Supercritical co2 impregnation of gelatin-chitosan films with clove essential oil and characterization thereof" in Chemical Industry & Chemical Engineering Quarterly, 25, no. 2 (2019):119-130,
https://doi.org/10.2298/CICEQ180323025R . .

TY  - JOUR
AU  - Radojković, Aleksandar
AU  - Luković-Golić, Danijela
AU  - Ćirković, Jovana
AU  - Marinković-Stanojević, Zorica
AU  - Pajić, Damir
AU  - Torić, Filip
AU  - Dapčević, Aleksandra
AU  - Vulić, Predrag
AU  - Branković, Zorica
AU  - Branković, Goran
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3856
AB  - Bulk ceramic samples of BiFeO3 were light doped (up to 1%) with Nb5+ in the place of Fe3+ (B-site doping) and their multiferroic properties were investigated using XRD, SEM, polarization (PMTS) and magnetization (SQUID) techniques. It is shown that even the small percentages of doping can notably change electric and magnetic behavior. Electric conductivity differs by two orders of magnitude between samples doped with 0.2% and 1% Nb. The ferroelectric behavior strongly depended on conduction mechanism, and transition from space-charge-limited current (SCLC) conduction to trap-filled limited (TFL) conduction regime reflected on a change in hysteresis patterns, particularly for the samples with 0.2% and 0.5% Nb. Separation of ZFC-FC magnetization curves occurred for all Nb concentrations and increased with Nb doping. Weak ferromagnetic behavior and the increase of remnant magnetization with Nb concentration was observed from the hysteresis measurements. Coercive field changed drastically compared to the pure BiFeO3, namely, the sample with 1% Nb exhibited very high coercive magnetic field of 10 kOe.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Tuning of BiFeO3 multiferroic properties by light doping with Nb
EP  - 16744
IS  - 14
SP  - 16739
VL  - 44
DO  - 10.1016/j.ceramint.2018.06.103
ER  - 

@article{
author = "Radojković, Aleksandar and Luković-Golić, Danijela and Ćirković, Jovana and Marinković-Stanojević, Zorica and Pajić, Damir and Torić, Filip and Dapčević, Aleksandra and Vulić, Predrag and Branković, Zorica and Branković, Goran",
year = "2018",
abstract = "Bulk ceramic samples of BiFeO3 were light doped (up to 1%) with Nb5+ in the place of Fe3+ (B-site doping) and their multiferroic properties were investigated using XRD, SEM, polarization (PMTS) and magnetization (SQUID) techniques. It is shown that even the small percentages of doping can notably change electric and magnetic behavior. Electric conductivity differs by two orders of magnitude between samples doped with 0.2% and 1% Nb. The ferroelectric behavior strongly depended on conduction mechanism, and transition from space-charge-limited current (SCLC) conduction to trap-filled limited (TFL) conduction regime reflected on a change in hysteresis patterns, particularly for the samples with 0.2% and 0.5% Nb. Separation of ZFC-FC magnetization curves occurred for all Nb concentrations and increased with Nb doping. Weak ferromagnetic behavior and the increase of remnant magnetization with Nb concentration was observed from the hysteresis measurements. Coercive field changed drastically compared to the pure BiFeO3, namely, the sample with 1% Nb exhibited very high coercive magnetic field of 10 kOe.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Tuning of BiFeO3 multiferroic properties by light doping with Nb",
pages = "16744-16739",
number = "14",
volume = "44",
doi = "10.1016/j.ceramint.2018.06.103"
}

Radojković, A., Luković-Golić, D., Ćirković, J., Marinković-Stanojević, Z., Pajić, D., Torić, F., Dapčević, A., Vulić, P., Branković, Z.,& Branković, G.. (2018). Tuning of BiFeO3 multiferroic properties by light doping with Nb. in Ceramics International
Elsevier Sci Ltd, Oxford., 44(14), 16739-16744.
https://doi.org/10.1016/j.ceramint.2018.06.103

Radojković A, Luković-Golić D, Ćirković J, Marinković-Stanojević Z, Pajić D, Torić F, Dapčević A, Vulić P, Branković Z, Branković G. Tuning of BiFeO3 multiferroic properties by light doping with Nb. in Ceramics International. 2018;44(14):16739-16744.
doi:10.1016/j.ceramint.2018.06.103 .

Radojković, Aleksandar, Luković-Golić, Danijela, Ćirković, Jovana, Marinković-Stanojević, Zorica, Pajić, Damir, Torić, Filip, Dapčević, Aleksandra, Vulić, Predrag, Branković, Zorica, Branković, Goran, "Tuning of BiFeO3 multiferroic properties by light doping with Nb" in Ceramics International, 44, no. 14 (2018):16739-16744,
https://doi.org/10.1016/j.ceramint.2018.06.103 . .

TY  - JOUR
AU  - Luković-Golić, Danijela
AU  - Radojković, Aleksandar
AU  - Ćirković, Jovana
AU  - Dapčević, Aleksandra
AU  - Pajić, Damir
AU  - Tasić, Nikola
AU  - Savić, Slavica M.
AU  - Počuča Nešić, Milica
AU  - Marković, Smilja
AU  - Branković, Goran
AU  - Marinković-Stanojević, Zorica
AU  - Branković, Zorica
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3473
AB  - BiFeO3 powders were synthesized by sonochemically assisted hydrothermal and hydro-evaporation methods. The X-ray diffraction confirmed the presence of secondary phases, Bi25FeO39 and Bi2Fe4O9, in as prepared BiFeO3 powders. Optimization of sintering conditions indicated that temperature of 800 degrees C and time of 2 h after pressing at 9 t/cm(2) provided ceramics samples with"the highest density (up to 96% of theoretical density) and the lowest content of secondary phases. Ferroelectric and magnetic characterization was performed on two selected ceramics samples with the highest densities. Ceramics obtained from the powder synthesized by the hydrothermal method showed greater lattice distortion along [1 1 1] axis and smaller grains, which resulted in larger values of electric polarization at room temperature. It also exhibited less Fe(3d)-O(2p) orbital overlapping due to a larger Fe-O-Fe bond angle, causing lower antiferromagnetic ordering and weak ferromagnetic behavior at low temperatures.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Structural, ferroelectric and magnetic properties of BiFeO3 synthesized by sonochemically assisted hydrothermal and hydro-evaporation chemical methods
EP  - 1631
IS  - 7
SP  - 1623
VL  - 36
DO  - 10.1016/j.jeurceramsoc.2016.01.031
ER  - 

@article{
author = "Luković-Golić, Danijela and Radojković, Aleksandar and Ćirković, Jovana and Dapčević, Aleksandra and Pajić, Damir and Tasić, Nikola and Savić, Slavica M. and Počuča Nešić, Milica and Marković, Smilja and Branković, Goran and Marinković-Stanojević, Zorica and Branković, Zorica",
year = "2016",
abstract = "BiFeO3 powders were synthesized by sonochemically assisted hydrothermal and hydro-evaporation methods. The X-ray diffraction confirmed the presence of secondary phases, Bi25FeO39 and Bi2Fe4O9, in as prepared BiFeO3 powders. Optimization of sintering conditions indicated that temperature of 800 degrees C and time of 2 h after pressing at 9 t/cm(2) provided ceramics samples with"the highest density (up to 96% of theoretical density) and the lowest content of secondary phases. Ferroelectric and magnetic characterization was performed on two selected ceramics samples with the highest densities. Ceramics obtained from the powder synthesized by the hydrothermal method showed greater lattice distortion along [1 1 1] axis and smaller grains, which resulted in larger values of electric polarization at room temperature. It also exhibited less Fe(3d)-O(2p) orbital overlapping due to a larger Fe-O-Fe bond angle, causing lower antiferromagnetic ordering and weak ferromagnetic behavior at low temperatures.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Structural, ferroelectric and magnetic properties of BiFeO3 synthesized by sonochemically assisted hydrothermal and hydro-evaporation chemical methods",
pages = "1631-1623",
number = "7",
volume = "36",
doi = "10.1016/j.jeurceramsoc.2016.01.031"
}

Luković-Golić, D., Radojković, A., Ćirković, J., Dapčević, A., Pajić, D., Tasić, N., Savić, S. M., Počuča Nešić, M., Marković, S., Branković, G., Marinković-Stanojević, Z.,& Branković, Z.. (2016). Structural, ferroelectric and magnetic properties of BiFeO3 synthesized by sonochemically assisted hydrothermal and hydro-evaporation chemical methods. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 36(7), 1623-1631.
https://doi.org/10.1016/j.jeurceramsoc.2016.01.031

Luković-Golić D, Radojković A, Ćirković J, Dapčević A, Pajić D, Tasić N, Savić SM, Počuča Nešić M, Marković S, Branković G, Marinković-Stanojević Z, Branković Z. Structural, ferroelectric and magnetic properties of BiFeO3 synthesized by sonochemically assisted hydrothermal and hydro-evaporation chemical methods. in Journal of the European Ceramic Society. 2016;36(7):1623-1631.
doi:10.1016/j.jeurceramsoc.2016.01.031 .

Luković-Golić, Danijela, Radojković, Aleksandar, Ćirković, Jovana, Dapčević, Aleksandra, Pajić, Damir, Tasić, Nikola, Savić, Slavica M., Počuča Nešić, Milica, Marković, Smilja, Branković, Goran, Marinković-Stanojević, Zorica, Branković, Zorica, "Structural, ferroelectric and magnetic properties of BiFeO3 synthesized by sonochemically assisted hydrothermal and hydro-evaporation chemical methods" in Journal of the European Ceramic Society, 36, no. 7 (2016):1623-1631,
https://doi.org/10.1016/j.jeurceramsoc.2016.01.031 . .

TY  - JOUR
AU  - Prsić, S.
AU  - Savić, Slavica M.
AU  - Branković, Zorica
AU  - Vrtnik, S.
AU  - Dapčević, Aleksandra
AU  - Branković, Goran
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2992
AB  - In the last decade, the sodium cobaltite ceramic became a promising candidate for potential thermoelectric applications, because of its large thermopower and low resistivity. In this work, polycrystalline samples of NaCo(2-x)CuxO(4) (x = 0, 0.01, 0.03, 0.05) were prepared using mechanochemically assisted solid-state reaction method (MASSR) and the citric acid complex method (CAC). Bulk samples were prepared by pressing into disc-shaped pellets and subsequently subjected to a thermal treatment at 880 degrees C in inert argon atmosphere. Changes in structural and microstructural characteristics of the samples, caused by the substitution of Cu for Co, were characterized using X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM), respectively. The results of inductively coupled plasma (ICP) analysis showed that the compositions of the final products correspond to gamma-NaCo2O4 and confirmed that desired compound was obtained in both syntheses procedures. The advantages and disadvantages of these two syntheses procedures have been observed and discussed: the CAC method enabled obtaining samples with higher density and fine microstructure compared to the MASSR method, thus better thermoelectric properties. The Cu2+ substitution led to the increase in Seebeck coefficient in both synthesis routes. The highest figure of merit of 0.022 at 300 K was observed for the sample doped with 1 mol% Cu, obtained by the CAC method, and it was almost twice higher than in the undoped sample confirming the significant influence of Cu-doping with even small concentrations.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Alloys and Compounds
T1  - Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh
EP  - 487
SP  - 480
VL  - 640
DO  - 10.1016/j.jallcom.2015.04.003
ER  - 

@article{
author = "Prsić, S. and Savić, Slavica M. and Branković, Zorica and Vrtnik, S. and Dapčević, Aleksandra and Branković, Goran",
year = "2015",
abstract = "In the last decade, the sodium cobaltite ceramic became a promising candidate for potential thermoelectric applications, because of its large thermopower and low resistivity. In this work, polycrystalline samples of NaCo(2-x)CuxO(4) (x = 0, 0.01, 0.03, 0.05) were prepared using mechanochemically assisted solid-state reaction method (MASSR) and the citric acid complex method (CAC). Bulk samples were prepared by pressing into disc-shaped pellets and subsequently subjected to a thermal treatment at 880 degrees C in inert argon atmosphere. Changes in structural and microstructural characteristics of the samples, caused by the substitution of Cu for Co, were characterized using X-ray diffraction (XRD) analysis, and scanning electron microscopy (SEM), respectively. The results of inductively coupled plasma (ICP) analysis showed that the compositions of the final products correspond to gamma-NaCo2O4 and confirmed that desired compound was obtained in both syntheses procedures. The advantages and disadvantages of these two syntheses procedures have been observed and discussed: the CAC method enabled obtaining samples with higher density and fine microstructure compared to the MASSR method, thus better thermoelectric properties. The Cu2+ substitution led to the increase in Seebeck coefficient in both synthesis routes. The highest figure of merit of 0.022 at 300 K was observed for the sample doped with 1 mol% Cu, obtained by the CAC method, and it was almost twice higher than in the undoped sample confirming the significant influence of Cu-doping with even small concentrations.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Alloys and Compounds",
title = "Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh",
pages = "487-480",
volume = "640",
doi = "10.1016/j.jallcom.2015.04.003"
}

Prsić, S., Savić, S. M., Branković, Z., Vrtnik, S., Dapčević, A.,& Branković, G.. (2015). Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh. in Journal of Alloys and Compounds
Elsevier Science Sa, Lausanne., 640, 480-487.
https://doi.org/10.1016/j.jallcom.2015.04.003

Prsić S, Savić SM, Branković Z, Vrtnik S, Dapčević A, Branković G. Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh. in Journal of Alloys and Compounds. 2015;640:480-487.
doi:10.1016/j.jallcom.2015.04.003 .

Prsić, S., Savić, Slavica M., Branković, Zorica, Vrtnik, S., Dapčević, Aleksandra, Branković, Goran, "Mechanochemically assisted solid-state and citric acid complex syntheses of Cu-doped sodium cobaltite ceramicsh" in Journal of Alloys and Compounds, 640 (2015):480-487,
https://doi.org/10.1016/j.jallcom.2015.04.003 . .

TY  - JOUR
AU  - Počuča-Nešić, Milica
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Vasiljević-Radović, Dana
AU  - Poleti, Dejan
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5492
AB  - Lanthanum nickel oxide (LaNiO3) is an electrically conductive ceramics, which has a potential use as electrode for ferroelectric thin films, multilayer actuators and many other electronic devices. In this work, LaNiO3 thin films were prepared by a modified Pechini process, based on polymeric citrate precursors. DTA analysis of the precursor solution showed that formation and crystallization of LaNiO3 were completed up to 790 degrees C. Films were deposited using spin-on technique and thermally treated in temperature range 600-800 degrees C, with heating rate of 1 degrees/min. Processing parameters, such as concentration and annealing temperature, as well as number of deposited layers were optimized to achieve desired film quality. The structure of LaNiO3 was confirmed by X-ray diffraction analysis, whereas microstructural parameters, such as grain size and roughness, were analyzed by AFM.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Optimization of processing parameters for preparation of LaNiO3 thin films from the citrate precursors
EP  - 1086
IS  - 2-3
SP  - 1083
VL  - 27
DO  - 10.1016/j.jeurceramsoc.2006.05.021
ER  - 

@article{
author = "Počuča-Nešić, Milica and Branković, Goran and Branković, Zorica and Vasiljević-Radović, Dana and Poleti, Dejan",
year = "2007",
abstract = "Lanthanum nickel oxide (LaNiO3) is an electrically conductive ceramics, which has a potential use as electrode for ferroelectric thin films, multilayer actuators and many other electronic devices. In this work, LaNiO3 thin films were prepared by a modified Pechini process, based on polymeric citrate precursors. DTA analysis of the precursor solution showed that formation and crystallization of LaNiO3 were completed up to 790 degrees C. Films were deposited using spin-on technique and thermally treated in temperature range 600-800 degrees C, with heating rate of 1 degrees/min. Processing parameters, such as concentration and annealing temperature, as well as number of deposited layers were optimized to achieve desired film quality. The structure of LaNiO3 was confirmed by X-ray diffraction analysis, whereas microstructural parameters, such as grain size and roughness, were analyzed by AFM.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Optimization of processing parameters for preparation of LaNiO3 thin films from the citrate precursors",
pages = "1086-1083",
number = "2-3",
volume = "27",
doi = "10.1016/j.jeurceramsoc.2006.05.021"
}

Počuča-Nešić, M., Branković, G., Branković, Z., Vasiljević-Radović, D.,& Poleti, D.. (2007). Optimization of processing parameters for preparation of LaNiO3 thin films from the citrate precursors. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 27(2-3), 1083-1086.
https://doi.org/10.1016/j.jeurceramsoc.2006.05.021

Počuča-Nešić M, Branković G, Branković Z, Vasiljević-Radović D, Poleti D. Optimization of processing parameters for preparation of LaNiO3 thin films from the citrate precursors. in Journal of the European Ceramic Society. 2007;27(2-3):1083-1086.
doi:10.1016/j.jeurceramsoc.2006.05.021 .

Počuča-Nešić, Milica, Branković, Goran, Branković, Zorica, Vasiljević-Radović, Dana, Poleti, Dejan, "Optimization of processing parameters for preparation of LaNiO3 thin films from the citrate precursors" in Journal of the European Ceramic Society, 27, no. 2-3 (2007):1083-1086,
https://doi.org/10.1016/j.jeurceramsoc.2006.05.021 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Varela, JA
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5474
AB  - SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage current and electrical stability. The best results were achieved with the following composition: 99.15% SnO2 +0.75% CoO+0.05% Cr2O3 +0.05% Nb2O5. Samples showed high density, reaching 99.5% of the theoretical density, as well as an homogeneous microstructure. The nonlinear coefficient was higher than 30 in the current range from 10(-7) to 10(-2) A/cm(2). The leakage current was 0.86 mu A/cm(2). These samples showed high stability of electrical parameters when they were exposed to high current of 27 mA/cm(2) for different time periods up to 30 min.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions
EP  - 3015
IS  - 12
SP  - 3011
VL  - 25
DO  - 10.1016/j.jeurceramsoc.2005.04.001
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Varela, JA",
year = "2005",
abstract = "SnO2 varistors doped with CoO, Cr2O3 and Nb2O5 were prepared by evaporation and decomposition of suspensions. The composition of the varistors was optimized to improve electrical properties, such as nonlinearity, leakage current and electrical stability. The best results were achieved with the following composition: 99.15% SnO2 +0.75% CoO+0.05% Cr2O3 +0.05% Nb2O5. Samples showed high density, reaching 99.5% of the theoretical density, as well as an homogeneous microstructure. The nonlinear coefficient was higher than 30 in the current range from 10(-7) to 10(-2) A/cm(2). The leakage current was 0.86 mu A/cm(2). These samples showed high stability of electrical parameters when they were exposed to high current of 27 mA/cm(2) for different time periods up to 30 min.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions",
pages = "3015-3011",
number = "12",
volume = "25",
doi = "10.1016/j.jeurceramsoc.2005.04.001"
}

Branković, G., Branković, Z.,& Varela, J.. (2005). Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 25(12), 3011-3015.
https://doi.org/10.1016/j.jeurceramsoc.2005.04.001

Branković G, Branković Z, Varela J. Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions. in Journal of the European Ceramic Society. 2005;25(12):3011-3015.
doi:10.1016/j.jeurceramsoc.2005.04.001 .

Branković, Goran, Branković, Zorica, Varela, JA, "Nonlinear properties and stability of SnO2 varistors prepared by evaporation and decomposition of suspensions" in Journal of the European Ceramic Society, 25, no. 12 (2005):3011-3015,
https://doi.org/10.1016/j.jeurceramsoc.2005.04.001 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Goes, MS
AU  - Paiva-Santos, C. O.
AU  - Cilense, Mario
AU  - Varela, JA
AU  - Longo, Elson
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5431
AB  - Ultasonic spray pyrolysis (SP) has been investigated for the production of the barium strontium titanate (BST) powders from the polymeric precursors. The processing parameters, such as flux of aerosol and temperature profile inside the furnace, were optimized to obtain single phase BST. The powders were characterized by the methods of X-ray diffraction analysis, SEM, EDS and TEM. The obtained powders were submicronic, consisting of spherical, polycrystalline particles, with internal nanocrystalline structure. Crystallite size of 10 nut, calculated using Rietveld refinement, is in a good agreement with results of HRTEM.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Science and Engineering B-Solid State Materials for Advanced Technology
T1  - Barium strontium titanate powders prepared by spray pyrolysis
EP  - 144
IS  - 2
SP  - 140
VL  - 122
DO  - 10.1016/j.mseb.2005.05.016
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Goes, MS and Paiva-Santos, C. O. and Cilense, Mario and Varela, JA and Longo, Elson",
year = "2005",
abstract = "Ultasonic spray pyrolysis (SP) has been investigated for the production of the barium strontium titanate (BST) powders from the polymeric precursors. The processing parameters, such as flux of aerosol and temperature profile inside the furnace, were optimized to obtain single phase BST. The powders were characterized by the methods of X-ray diffraction analysis, SEM, EDS and TEM. The obtained powders were submicronic, consisting of spherical, polycrystalline particles, with internal nanocrystalline structure. Crystallite size of 10 nut, calculated using Rietveld refinement, is in a good agreement with results of HRTEM.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Science and Engineering B-Solid State Materials for Advanced Technology",
title = "Barium strontium titanate powders prepared by spray pyrolysis",
pages = "144-140",
number = "2",
volume = "122",
doi = "10.1016/j.mseb.2005.05.016"
}

Branković, G., Branković, Z., Goes, M., Paiva-Santos, C. O., Cilense, M., Varela, J.,& Longo, E.. (2005). Barium strontium titanate powders prepared by spray pyrolysis. in Materials Science and Engineering B-Solid State Materials for Advanced Technology
Elsevier Science Sa, Lausanne., 122(2), 140-144.
https://doi.org/10.1016/j.mseb.2005.05.016

Branković G, Branković Z, Goes M, Paiva-Santos CO, Cilense M, Varela J, Longo E. Barium strontium titanate powders prepared by spray pyrolysis. in Materials Science and Engineering B-Solid State Materials for Advanced Technology. 2005;122(2):140-144.
doi:10.1016/j.mseb.2005.05.016 .

Branković, Goran, Branković, Zorica, Goes, MS, Paiva-Santos, C. O., Cilense, Mario, Varela, JA, Longo, Elson, "Barium strontium titanate powders prepared by spray pyrolysis" in Materials Science and Engineering B-Solid State Materials for Advanced Technology, 122, no. 2 (2005):140-144,
https://doi.org/10.1016/j.mseb.2005.05.016 . .

TY  - JOUR
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Jovalekić, Čedomir
AU  - Branković, Zorica
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5416
AB  - A series of gamma-Bi2O3 phases doped with Zn, Si, Pb and Fe was prepared by mechanochemical treatment of corresponding oxide mixtures with a nominal composition 6Bi(2)O(3) (.) MOx (MOx = ZnO, SiO2, PbO) and 12Bi(2)O(3) (.) Fe2O3 using high-energy ball mill. The products are characterized by X-ray powder diffraction technique. Influence of milling conditions: milling time from 5 min to 10 h, milling medium (steel or ZrO2) and injected mechanical power on unit-cell parameters and crystallinity of products, as well as on reaction kinetics are investigated and discussed.
PB  - Amsterdam : Elsevier
T2  - Solid State Sciences
T1  - Mechanochemical synthesis of gamma-Bi2O3
EP  - 245
IS  - 3
SP  - 239
VL  - 6
DO  - 10.1016/j.solidstatesciences.2003.12.003
UR  - https://hdl.handle.net/21.15107/rcub_dais_12880
ER  - 

@article{
author = "Poleti, Dejan and Karanović, Ljiljana and Zdujić, Miodrag and Jovalekić, Čedomir and Branković, Zorica",
year = "2004",
abstract = "A series of gamma-Bi2O3 phases doped with Zn, Si, Pb and Fe was prepared by mechanochemical treatment of corresponding oxide mixtures with a nominal composition 6Bi(2)O(3) (.) MOx (MOx = ZnO, SiO2, PbO) and 12Bi(2)O(3) (.) Fe2O3 using high-energy ball mill. The products are characterized by X-ray powder diffraction technique. Influence of milling conditions: milling time from 5 min to 10 h, milling medium (steel or ZrO2) and injected mechanical power on unit-cell parameters and crystallinity of products, as well as on reaction kinetics are investigated and discussed.",
publisher = "Amsterdam : Elsevier",
journal = "Solid State Sciences",
title = "Mechanochemical synthesis of gamma-Bi2O3",
pages = "245-239",
number = "3",
volume = "6",
doi = "10.1016/j.solidstatesciences.2003.12.003",
url = "https://hdl.handle.net/21.15107/rcub_dais_12880"
}

Poleti, D., Karanović, L., Zdujić, M., Jovalekić, Č.,& Branković, Z.. (2004). Mechanochemical synthesis of gamma-Bi2O3. in Solid State Sciences
Amsterdam : Elsevier., 6(3), 239-245.
https://doi.org/10.1016/j.solidstatesciences.2003.12.003
https://hdl.handle.net/21.15107/rcub_dais_12880

Poleti D, Karanović L, Zdujić M, Jovalekić Č, Branković Z. Mechanochemical synthesis of gamma-Bi2O3. in Solid State Sciences. 2004;6(3):239-245.
doi:10.1016/j.solidstatesciences.2003.12.003
https://hdl.handle.net/21.15107/rcub_dais_12880 .

Poleti, Dejan, Karanović, Ljiljana, Zdujić, Miodrag, Jovalekić, Čedomir, Branković, Zorica, "Mechanochemical synthesis of gamma-Bi2O3" in Solid State Sciences, 6, no. 3 (2004):239-245,
https://doi.org/10.1016/j.solidstatesciences.2003.12.003 .,
https://hdl.handle.net/21.15107/rcub_dais_12880 .

TY  - JOUR
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5407
AB  - Mechanochemical synthesis was applied to obtain nanocrystalline powders of composition Pb(Zr0.52Ti0.48)O-3 (PZT). Milling was performed in a planetary ball mill using vials and balls made of zirconia or steel-in order to investigate influence of milling media on the electrical properties of resulting ceramics. PZT ceramics showed high values for dielectric constant (epsilon(r)), reaching 970 at room temperature, as well as low dielectric loss (tandelta) under the optimal processing conditions. High values of remanent polarization (P-r) indicate high internal polarizability. The best samples showed piezoelectric strain constant d(33) = 347 pC/N and planar coupling factor k(P) = 0.44. Milling in ZrO2 medium prevents powder contamination and provides reproducibility of milling process. Also, PZT obtained from the powders milled in ZrO2 exhibited lower values of dielectric loss, in comparison with the PTZ obtained from the powders milled in Fe. This suggests that contamination of the powder with Fe could result in an increase of conductivity in final product.
PB  - Kluwer Academic Publishers
T2  - Journal of Materials Science
T1  - Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics
EP  - 5294
IS  - 16-17
SP  - 5291
VL  - 39
DO  - 10.1023/B:JMSC.0000039231.74493.86
ER  - 

@article{
year = "2004",
abstract = "Mechanochemical synthesis was applied to obtain nanocrystalline powders of composition Pb(Zr0.52Ti0.48)O-3 (PZT). Milling was performed in a planetary ball mill using vials and balls made of zirconia or steel-in order to investigate influence of milling media on the electrical properties of resulting ceramics. PZT ceramics showed high values for dielectric constant (epsilon(r)), reaching 970 at room temperature, as well as low dielectric loss (tandelta) under the optimal processing conditions. High values of remanent polarization (P-r) indicate high internal polarizability. The best samples showed piezoelectric strain constant d(33) = 347 pC/N and planar coupling factor k(P) = 0.44. Milling in ZrO2 medium prevents powder contamination and provides reproducibility of milling process. Also, PZT obtained from the powders milled in ZrO2 exhibited lower values of dielectric loss, in comparison with the PTZ obtained from the powders milled in Fe. This suggests that contamination of the powder with Fe could result in an increase of conductivity in final product.",
publisher = "Kluwer Academic Publishers",
journal = "Journal of Materials Science",
title = "Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics",
pages = "5294-5291",
number = "16-17",
volume = "39",
doi = "10.1023/B:JMSC.0000039231.74493.86"
}

(2004). Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics. in Journal of Materials Science
Kluwer Academic Publishers., 39(16-17), 5291-5294.
https://doi.org/10.1023/B:JMSC.0000039231.74493.86

Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics. in Journal of Materials Science. 2004;39(16-17):5291-5294.
doi:10.1023/B:JMSC.0000039231.74493.86 .

"Dielectric and piezoelectric properties of the mechanochemically prepared PZT ceramics" in Journal of Materials Science, 39, no. 16-17 (2004):5291-5294,
https://doi.org/10.1023/B:JMSC.0000039231.74493.86 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Varela, JA
AU  - Longo, Elson
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5414
AB  - Strontium titanate thin films were prepared by spray pyrolysis technique. Deposition parameters, such as solution concentration, time and temperature of deposition, and flow rate of carrier gas were optimized to obtain dense films without cracks. Films with different thicknesses were prepared through the control of deposition time. Prepared thin films were homogeneous, well crystallized, with uniform grain size.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Strontium titanate films prepared by spray pyrolysis
EP  - 991
IS  - 6
SP  - 989
VL  - 24
DO  - 10.1016/S0955-2219(03)00459-X
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Varela, JA and Longo, Elson",
year = "2004",
abstract = "Strontium titanate thin films were prepared by spray pyrolysis technique. Deposition parameters, such as solution concentration, time and temperature of deposition, and flow rate of carrier gas were optimized to obtain dense films without cracks. Films with different thicknesses were prepared through the control of deposition time. Prepared thin films were homogeneous, well crystallized, with uniform grain size.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Strontium titanate films prepared by spray pyrolysis",
pages = "991-989",
number = "6",
volume = "24",
doi = "10.1016/S0955-2219(03)00459-X"
}

Branković, G., Branković, Z., Varela, J.,& Longo, E.. (2004). Strontium titanate films prepared by spray pyrolysis. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 24(6), 989-991.
https://doi.org/10.1016/S0955-2219(03)00459-X

Branković G, Branković Z, Varela J, Longo E. Strontium titanate films prepared by spray pyrolysis. in Journal of the European Ceramic Society. 2004;24(6):989-991.
doi:10.1016/S0955-2219(03)00459-X .

Branković, Goran, Branković, Zorica, Varela, JA, Longo, Elson, "Strontium titanate films prepared by spray pyrolysis" in Journal of the European Ceramic Society, 24, no. 6 (2004):989-991,
https://doi.org/10.1016/S0955-2219(03)00459-X . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Branković, Goran
AU  - Varela, JA
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5412
AB  - PZT thin films of composition Pb(Zr0.52Ti0.48)O-3 were prepared by a novel method from the suspension of nanocrystalline PZT powders. The powders were obtained by mechanochemical synthesis. Films were deposited on silicon (100) and platinum covered silicon substrates (Pt (111) /Ti/SiO2/Si) Using spin-on technique. Substrate type has influence on films crystallinity, orientation and can react with the films changing its phase composition. Films microstructure strongly depends on thermal treatment conditions due to phase and compositional changes of the films.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders
EP  - 1948
IS  - 6
SP  - 1945
VL  - 24
DO  - 10.1016/S0955-2219(03)00541-7
ER  - 

@article{
author = "Branković, Zorica and Branković, Goran and Varela, JA",
year = "2004",
abstract = "PZT thin films of composition Pb(Zr0.52Ti0.48)O-3 were prepared by a novel method from the suspension of nanocrystalline PZT powders. The powders were obtained by mechanochemical synthesis. Films were deposited on silicon (100) and platinum covered silicon substrates (Pt (111) /Ti/SiO2/Si) Using spin-on technique. Substrate type has influence on films crystallinity, orientation and can react with the films changing its phase composition. Films microstructure strongly depends on thermal treatment conditions due to phase and compositional changes of the films.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders",
pages = "1948-1945",
number = "6",
volume = "24",
doi = "10.1016/S0955-2219(03)00541-7"
}

Branković, Z., Branković, G.,& Varela, J.. (2004). Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 24(6), 1945-1948.
https://doi.org/10.1016/S0955-2219(03)00541-7

Branković Z, Branković G, Varela J. Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders. in Journal of the European Ceramic Society. 2004;24(6):1945-1948.
doi:10.1016/S0955-2219(03)00541-7 .

Branković, Zorica, Branković, Goran, Varela, JA, "Microstructural investigation of the PZT films prepared from the suspension of nanocrystalline powders" in Journal of the European Ceramic Society, 24, no. 6 (2004):1945-1948,
https://doi.org/10.1016/S0955-2219(03)00541-7 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Davolos, MR
AU  - Cilense, Mario
AU  - Varela, JA
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5406
AB  - The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based ceramics containing only one of the dopants were prepared and characterized. Spectroscopic investigations [visible, near infrared (IR) and IR region] were performed to obtain information about dopants valence states inside the ceramics, as well as about their influence on electronic structure of the material. Structural properties were investigated by X-ray diffraction analysis and mechanisms of dopant incorporation were proposed. Obtained results were confirmed with results of the electrical measurements. Microstructural changes in doped ceramics were investigated by scanning electron microscopy (SEM) analysis that showed great differences in densities, grain size, and morphology of the SnO2 ceramics depending on type of dopants and their distribution.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics
EP  - 251
IS  - 4-5
SP  - 243
VL  - 52
DO  - 10.1016/j.matchar.2002.11.001
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Davolos, MR and Cilense, Mario and Varela, JA",
year = "2004",
abstract = "The influence of dopants commonly used in SnO2 varistor ceramics, such as CoO, Cr2O3 or Nb2O5, on the structural properties of SnO2 was investigated. Several SnO2-based ceramics containing only one of the dopants were prepared and characterized. Spectroscopic investigations [visible, near infrared (IR) and IR region] were performed to obtain information about dopants valence states inside the ceramics, as well as about their influence on electronic structure of the material. Structural properties were investigated by X-ray diffraction analysis and mechanisms of dopant incorporation were proposed. Obtained results were confirmed with results of the electrical measurements. Microstructural changes in doped ceramics were investigated by scanning electron microscopy (SEM) analysis that showed great differences in densities, grain size, and morphology of the SnO2 ceramics depending on type of dopants and their distribution.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics",
pages = "251-243",
number = "4-5",
volume = "52",
doi = "10.1016/j.matchar.2002.11.001"
}

Branković, G., Branković, Z., Davolos, M., Cilense, M.,& Varela, J.. (2004). Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics. in Materials Characterization
Elsevier Science Inc, New York., 52(4-5), 243-251.
https://doi.org/10.1016/j.matchar.2002.11.001

Branković G, Branković Z, Davolos M, Cilense M, Varela J. Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics. in Materials Characterization. 2004;52(4-5):243-251.
doi:10.1016/j.matchar.2002.11.001 .

Branković, Goran, Branković, Zorica, Davolos, MR, Cilense, Mario, Varela, JA, "Influence of the common varistor dopants (CoO, Cr2O3 and Nb2O5) on the structural properties of SnO2 ceramics" in Materials Characterization, 52, no. 4-5 (2004):243-251,
https://doi.org/10.1016/j.matchar.2002.11.001 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Branković, Goran
AU  - Varela, JA
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5398
AB  - PZT ceramics were obtained from the mechanochemically synthesized powders. Milling and sintering conditions were optimized based on results of density measurements, as well as on microstructural and electrical characterization. As a result, highly dense and homogeneous ceramics were obtained. Excellent microstructural properties resulted in good electrical properties. Samples showed values of dielectric constants reaching 12800 at the Curie temperature, as well as low dielectric loss under the optimal processing conditions. High values of remanent polarization, reaching 60 muC cm(-2), indicate high internal polarizability.
PB  - Kluwer Academic Publ, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - PZT ceramics obtained from mechanochemically synthesized powders
EP  - 41
IS  - 1
SP  - 37
VL  - 14
DO  - 10.1023/A:1021527615661
ER  - 

@article{
author = "Branković, Zorica and Branković, Goran and Varela, JA",
year = "2003",
abstract = "PZT ceramics were obtained from the mechanochemically synthesized powders. Milling and sintering conditions were optimized based on results of density measurements, as well as on microstructural and electrical characterization. As a result, highly dense and homogeneous ceramics were obtained. Excellent microstructural properties resulted in good electrical properties. Samples showed values of dielectric constants reaching 12800 at the Curie temperature, as well as low dielectric loss under the optimal processing conditions. High values of remanent polarization, reaching 60 muC cm(-2), indicate high internal polarizability.",
publisher = "Kluwer Academic Publ, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "PZT ceramics obtained from mechanochemically synthesized powders",
pages = "41-37",
number = "1",
volume = "14",
doi = "10.1023/A:1021527615661"
}

Branković, Z., Branković, G.,& Varela, J.. (2003). PZT ceramics obtained from mechanochemically synthesized powders. in Journal of Materials Science-Materials in Electronics
Kluwer Academic Publ, Dordrecht., 14(1), 37-41.
https://doi.org/10.1023/A:1021527615661

Branković Z, Branković G, Varela J. PZT ceramics obtained from mechanochemically synthesized powders. in Journal of Materials Science-Materials in Electronics. 2003;14(1):37-41.
doi:10.1023/A:1021527615661 .

Branković, Zorica, Branković, Goran, Varela, JA, "PZT ceramics obtained from mechanochemically synthesized powders" in Journal of Materials Science-Materials in Electronics, 14, no. 1 (2003):37-41,
https://doi.org/10.1023/A:1021527615661 . .

TY  - JOUR
AU  - Branković, Goran
AU  - Branković, Zorica
AU  - Jović, Vladimir D
AU  - Varela, JA
PY  - 2001
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5342
AB  - A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the non-Debye behaviour and distribution of relaxation times in ceramic materials. Considering the equivalent circuit the impedance of the grain boundary region was expressed. It was shown that the impedance of the grain boundary region has the form of the Davidson-Cole equation. The fractal dimension of the inhomogeneous distribution of charge carriers in the region close to the grain boundaries could be calculated based on the relation d(s) = 1 + beta, where beta is the constant from the Davidson-Cole equation.
PB  - Kluwer Academic Publ, Dordrecht
T2  - Journal of Electroceramics
T1  - Fractal approach to ac impedance spectroscopy studies of ceramic materials
EP  - 94
IS  - 2
SP  - 89
VL  - 7
DO  - 10.1023/A:1013166204618
ER  - 

@article{
author = "Branković, Goran and Branković, Zorica and Jović, Vladimir D and Varela, JA",
year = "2001",
abstract = "A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the non-Debye behaviour and distribution of relaxation times in ceramic materials. Considering the equivalent circuit the impedance of the grain boundary region was expressed. It was shown that the impedance of the grain boundary region has the form of the Davidson-Cole equation. The fractal dimension of the inhomogeneous distribution of charge carriers in the region close to the grain boundaries could be calculated based on the relation d(s) = 1 + beta, where beta is the constant from the Davidson-Cole equation.",
publisher = "Kluwer Academic Publ, Dordrecht",
journal = "Journal of Electroceramics",
title = "Fractal approach to ac impedance spectroscopy studies of ceramic materials",
pages = "94-89",
number = "2",
volume = "7",
doi = "10.1023/A:1013166204618"
}

Branković, G., Branković, Z., Jović, V. D.,& Varela, J.. (2001). Fractal approach to ac impedance spectroscopy studies of ceramic materials. in Journal of Electroceramics
Kluwer Academic Publ, Dordrecht., 7(2), 89-94.
https://doi.org/10.1023/A:1013166204618

Branković G, Branković Z, Jović VD, Varela J. Fractal approach to ac impedance spectroscopy studies of ceramic materials. in Journal of Electroceramics. 2001;7(2):89-94.
doi:10.1023/A:1013166204618 .

Branković, Goran, Branković, Zorica, Jović, Vladimir D, Varela, JA, "Fractal approach to ac impedance spectroscopy studies of ceramic materials" in Journal of Electroceramics, 7, no. 2 (2001):89-94,
https://doi.org/10.1023/A:1013166204618 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Milošević, Olivera
AU  - Poleti, Dejan
AU  - Karanović, Ljiljana
AU  - Uskoković, Dragan
PY  - 2000
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5325
AB  - ZnO varistors with non-linearity coefficients reaching 50 and low values of the leakage current (approximately 0.01 A/m2), were obtained by a method referred to as `direct mixing of constituent phases'. The method is based on sintering of a mixture of the constituent phases with the following compositions: ZnO phase uniformly doped with Co2+ and Mn2+; intergranular phase: γ-Bi2O3 stabilized with Mn2+ or Zn2+; spinel phase: Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. As proved, the obtained varistors are composed of the same phases as those introduced into the system. The influence of composition as well as milling and sintering parameters on the varistor characteristics were investigated. Some varistor powder mixtures were intensively milled before sintering. As a result, high density ceramics with highly homogeneous microstructure were obtained after sintering.
PB  - Sendai : Japan Institute of Metals
T2  - Materials Transactions, JIM
T1  - ZnO varistors prepared by direct mixing of constituent phases
EP  - 1231
IS  - 9
SP  - 1226
VL  - 41
DO  - 10.2320/matertrans1989.41.1226
UR  - https://hdl.handle.net/21.15107/rcub_dais_3865
ER  - 

@article{
author = "Branković, Zorica and Milošević, Olivera and Poleti, Dejan and Karanović, Ljiljana and Uskoković, Dragan",
year = "2000",
abstract = "ZnO varistors with non-linearity coefficients reaching 50 and low values of the leakage current (approximately 0.01 A/m2), were obtained by a method referred to as `direct mixing of constituent phases'. The method is based on sintering of a mixture of the constituent phases with the following compositions: ZnO phase uniformly doped with Co2+ and Mn2+; intergranular phase: γ-Bi2O3 stabilized with Mn2+ or Zn2+; spinel phase: Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. As proved, the obtained varistors are composed of the same phases as those introduced into the system. The influence of composition as well as milling and sintering parameters on the varistor characteristics were investigated. Some varistor powder mixtures were intensively milled before sintering. As a result, high density ceramics with highly homogeneous microstructure were obtained after sintering.",
publisher = "Sendai : Japan Institute of Metals",
journal = "Materials Transactions, JIM",
title = "ZnO varistors prepared by direct mixing of constituent phases",
pages = "1231-1226",
number = "9",
volume = "41",
doi = "10.2320/matertrans1989.41.1226",
url = "https://hdl.handle.net/21.15107/rcub_dais_3865"
}

Branković, Z., Milošević, O., Poleti, D., Karanović, L.,& Uskoković, D.. (2000). ZnO varistors prepared by direct mixing of constituent phases. in Materials Transactions, JIM
Sendai : Japan Institute of Metals., 41(9), 1226-1231.
https://doi.org/10.2320/matertrans1989.41.1226
https://hdl.handle.net/21.15107/rcub_dais_3865

Branković Z, Milošević O, Poleti D, Karanović L, Uskoković D. ZnO varistors prepared by direct mixing of constituent phases. in Materials Transactions, JIM. 2000;41(9):1226-1231.
doi:10.2320/matertrans1989.41.1226
https://hdl.handle.net/21.15107/rcub_dais_3865 .

Branković, Zorica, Milošević, Olivera, Poleti, Dejan, Karanović, Ljiljana, Uskoković, Dragan, "ZnO varistors prepared by direct mixing of constituent phases" in Materials Transactions, JIM, 41, no. 9 (2000):1226-1231,
https://doi.org/10.2320/matertrans1989.41.1226 .,
https://hdl.handle.net/21.15107/rcub_dais_3865 .