Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3
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2013
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Metapodaci
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A series of polycrystalline samples containing sillenite-like (doped gamma-Bi2O3) phases were prepared by high-temperature reactions from alpha-Bi2O3 powder and different oxides in six pseudo-binary Bi2O3-MxOy (M = Mn, Ti, V) and six pseudo-ternary Bi2O3-M1(x)O(y)-M2(x)O(y) (M1 = Pb, Zn, Ti and M2 = Zn, Ti, Si) systems. The products were characterized by XRD, SEM/EDX, HRTEM, SAED and DTA techniques. It is shown that for pseudo-binary systems, the phase composition of specimens depends on dopant content, while, for pseudo-ternary systems, depends on dopants radii, as well. In pseudo-binary systems, singlephase sillenites are obtained if the dopant content is in accordance with formula Bi12M4+O20, for M = Mn and Ti, and Bi-12(M-0.8(5+))O-20, for M = V. However, two coexisting sillenite-like phases, doped compound and nominally undoped solid solution, are found if a half of that dopant quantity is applied. In pseudoternary systems, the phase-pure double-doped sillenite specimens are ident...ified if ionic radii of dopants differ less than 40%. Otherwise, two coexisting sillenites were obtained. The possibility to prepare the undoped gamma-Bi2O3 phase was also discussed.
Ključne reči:
Sillenites / Bismuth(III) oxides / Coexistence / Doping / Solid solutions / Phase equilibriaIzvor:
Solid State Sciences, 2013, 25, 93-102Izdavač:
- Elsevier, Amsterdam
Finansiranje / projekti:
- 0-3D nanostrukture za primenu u elektronici i obnovljivim izvorima energije: sinteza, karakterizacija i procesiranje (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
DOI: 10.1016/j.solidstatesciences.2013.08.010
ISSN: 1293-2558
WoS: 000327108800015
Scopus: 2-s2.0-84884575448
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Dapčević, Aleksandra AU - Poleti, Dejan AU - Karanović, Ljiljana AU - Rogan, Jelena AU - Dražić, Goran PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2441 AB - A series of polycrystalline samples containing sillenite-like (doped gamma-Bi2O3) phases were prepared by high-temperature reactions from alpha-Bi2O3 powder and different oxides in six pseudo-binary Bi2O3-MxOy (M = Mn, Ti, V) and six pseudo-ternary Bi2O3-M1(x)O(y)-M2(x)O(y) (M1 = Pb, Zn, Ti and M2 = Zn, Ti, Si) systems. The products were characterized by XRD, SEM/EDX, HRTEM, SAED and DTA techniques. It is shown that for pseudo-binary systems, the phase composition of specimens depends on dopant content, while, for pseudo-ternary systems, depends on dopants radii, as well. In pseudo-binary systems, singlephase sillenites are obtained if the dopant content is in accordance with formula Bi12M4+O20, for M = Mn and Ti, and Bi-12(M-0.8(5+))O-20, for M = V. However, two coexisting sillenite-like phases, doped compound and nominally undoped solid solution, are found if a half of that dopant quantity is applied. In pseudoternary systems, the phase-pure double-doped sillenite specimens are identified if ionic radii of dopants differ less than 40%. Otherwise, two coexisting sillenites were obtained. The possibility to prepare the undoped gamma-Bi2O3 phase was also discussed. PB - Elsevier, Amsterdam T2 - Solid State Sciences T1 - Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3 EP - 102 SP - 93 VL - 25 DO - 10.1016/j.solidstatesciences.2013.08.010 ER -
@article{ author = "Dapčević, Aleksandra and Poleti, Dejan and Karanović, Ljiljana and Rogan, Jelena and Dražić, Goran", year = "2013", abstract = "A series of polycrystalline samples containing sillenite-like (doped gamma-Bi2O3) phases were prepared by high-temperature reactions from alpha-Bi2O3 powder and different oxides in six pseudo-binary Bi2O3-MxOy (M = Mn, Ti, V) and six pseudo-ternary Bi2O3-M1(x)O(y)-M2(x)O(y) (M1 = Pb, Zn, Ti and M2 = Zn, Ti, Si) systems. The products were characterized by XRD, SEM/EDX, HRTEM, SAED and DTA techniques. It is shown that for pseudo-binary systems, the phase composition of specimens depends on dopant content, while, for pseudo-ternary systems, depends on dopants radii, as well. In pseudo-binary systems, singlephase sillenites are obtained if the dopant content is in accordance with formula Bi12M4+O20, for M = Mn and Ti, and Bi-12(M-0.8(5+))O-20, for M = V. However, two coexisting sillenite-like phases, doped compound and nominally undoped solid solution, are found if a half of that dopant quantity is applied. In pseudoternary systems, the phase-pure double-doped sillenite specimens are identified if ionic radii of dopants differ less than 40%. Otherwise, two coexisting sillenites were obtained. The possibility to prepare the undoped gamma-Bi2O3 phase was also discussed.", publisher = "Elsevier, Amsterdam", journal = "Solid State Sciences", title = "Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3", pages = "102-93", volume = "25", doi = "10.1016/j.solidstatesciences.2013.08.010" }
Dapčević, A., Poleti, D., Karanović, L., Rogan, J.,& Dražić, G.. (2013). Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3. in Solid State Sciences Elsevier, Amsterdam., 25, 93-102. https://doi.org/10.1016/j.solidstatesciences.2013.08.010
Dapčević A, Poleti D, Karanović L, Rogan J, Dražić G. Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3. in Solid State Sciences. 2013;25:93-102. doi:10.1016/j.solidstatesciences.2013.08.010 .
Dapčević, Aleksandra, Poleti, Dejan, Karanović, Ljiljana, Rogan, Jelena, Dražić, Goran, "Coexistence of several sillenite-like phases in pseudo-binary and pseudo-ternary systems based on Bi2O3" in Solid State Sciences, 25 (2013):93-102, https://doi.org/10.1016/j.solidstatesciences.2013.08.010 . .