Multicomponent solid solution with pyrochlore structure
Solución sólida multicomponente con estructura de pirocloro
Аутори
Matović, BrankoMaletaškić, Jelena
Maksimović, Vesna
Dimitrijević, Stevan P.
Todorović, Bratislav
Pejić, Milan
Zagorac, Dejan
Zagorac, Jelena
Zeng, Yu-Ping
Cvijović-Alagić, Ivana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Multicomponent oxide with pyrochlore structure (A2B2O7), containing 7 different A-site cations and 3 B-site cations in equiatomic amounts, was synthesized. Powders with nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 were fabricated through a reaction of metal nitrates (A-site) and metal chlorides (B-site) with sodium hydroxide during the solid state displacement reaction. Room temperature synthesis initially resulted in the obtainment of amorphous powders, which crystallized after subsequent calcination to form single crystalline compounds. Crystalline high-entropy ceramic powders formation took place at temperatures as low as 750 °C. During calcination, defective fluorite (F-A2B2O7) and crystal pyrochlore (Py-A2B2O7) structures coexist. A large number of cations induce the obtainment of stable high-entropy pyrochlores. Results showed that sintering at 1650 °C lead to pure crystalline single-phase pyrochlore formation. High-density ceramic, free of additi...ves, was obtained after powders were compacted and subjected to pressureless sintering at 1650 °C. Multicomponent pyrochlore structure was investigated using the theoretical and experimental multi-methodological approach.
Кључне речи:
Density functional theory / High-entropy oxide / Microstructure / Phase evolution / PyrochloreИзвор:
Boletin de la Sociedad Espanola de Ceramica y Vidrio, 2023Издавач:
- Sociedad Espanola de Ceramica y Vidrio
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200017 (Универзитет у Београду, Институт за нуклеарне науке Винча, Београд-Винча) (RS-MESTD-inst-2020-200017)
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200135 (Универзитет у Београду, Технолошко-металуршки факултет) (RS-MESTD-inst-2020-200135)
Институција/група
Inovacioni centarTY - JOUR AU - Matović, Branko AU - Maletaškić, Jelena AU - Maksimović, Vesna AU - Dimitrijević, Stevan P. AU - Todorović, Bratislav AU - Pejić, Milan AU - Zagorac, Dejan AU - Zagorac, Jelena AU - Zeng, Yu-Ping AU - Cvijović-Alagić, Ivana PY - 2023 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5959 AB - Multicomponent oxide with pyrochlore structure (A2B2O7), containing 7 different A-site cations and 3 B-site cations in equiatomic amounts, was synthesized. Powders with nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 were fabricated through a reaction of metal nitrates (A-site) and metal chlorides (B-site) with sodium hydroxide during the solid state displacement reaction. Room temperature synthesis initially resulted in the obtainment of amorphous powders, which crystallized after subsequent calcination to form single crystalline compounds. Crystalline high-entropy ceramic powders formation took place at temperatures as low as 750 °C. During calcination, defective fluorite (F-A2B2O7) and crystal pyrochlore (Py-A2B2O7) structures coexist. A large number of cations induce the obtainment of stable high-entropy pyrochlores. Results showed that sintering at 1650 °C lead to pure crystalline single-phase pyrochlore formation. High-density ceramic, free of additives, was obtained after powders were compacted and subjected to pressureless sintering at 1650 °C. Multicomponent pyrochlore structure was investigated using the theoretical and experimental multi-methodological approach. PB - Sociedad Espanola de Ceramica y Vidrio T2 - Boletin de la Sociedad Espanola de Ceramica y Vidrio T1 - Multicomponent solid solution with pyrochlore structure T1 - Solución sólida multicomponente con estructura de pirocloro DO - 10.1016/j.bsecv.2023.01.005 ER -
@article{ author = "Matović, Branko and Maletaškić, Jelena and Maksimović, Vesna and Dimitrijević, Stevan P. and Todorović, Bratislav and Pejić, Milan and Zagorac, Dejan and Zagorac, Jelena and Zeng, Yu-Ping and Cvijović-Alagić, Ivana", year = "2023", abstract = "Multicomponent oxide with pyrochlore structure (A2B2O7), containing 7 different A-site cations and 3 B-site cations in equiatomic amounts, was synthesized. Powders with nominal composition (La1/7Sm1/7Nd1/7Pr1/7Y1/7Gd1/7Yb1/7)2(Sn1/3Hf1/3Zr1/3)2O7 were fabricated through a reaction of metal nitrates (A-site) and metal chlorides (B-site) with sodium hydroxide during the solid state displacement reaction. Room temperature synthesis initially resulted in the obtainment of amorphous powders, which crystallized after subsequent calcination to form single crystalline compounds. Crystalline high-entropy ceramic powders formation took place at temperatures as low as 750 °C. During calcination, defective fluorite (F-A2B2O7) and crystal pyrochlore (Py-A2B2O7) structures coexist. A large number of cations induce the obtainment of stable high-entropy pyrochlores. Results showed that sintering at 1650 °C lead to pure crystalline single-phase pyrochlore formation. High-density ceramic, free of additives, was obtained after powders were compacted and subjected to pressureless sintering at 1650 °C. Multicomponent pyrochlore structure was investigated using the theoretical and experimental multi-methodological approach.", publisher = "Sociedad Espanola de Ceramica y Vidrio", journal = "Boletin de la Sociedad Espanola de Ceramica y Vidrio", title = "Multicomponent solid solution with pyrochlore structure, Solución sólida multicomponente con estructura de pirocloro", doi = "10.1016/j.bsecv.2023.01.005" }
Matović, B., Maletaškić, J., Maksimović, V., Dimitrijević, S. P., Todorović, B., Pejić, M., Zagorac, D., Zagorac, J., Zeng, Y.,& Cvijović-Alagić, I.. (2023). Multicomponent solid solution with pyrochlore structure. in Boletin de la Sociedad Espanola de Ceramica y Vidrio Sociedad Espanola de Ceramica y Vidrio.. https://doi.org/10.1016/j.bsecv.2023.01.005
Matović B, Maletaškić J, Maksimović V, Dimitrijević SP, Todorović B, Pejić M, Zagorac D, Zagorac J, Zeng Y, Cvijović-Alagić I. Multicomponent solid solution with pyrochlore structure. in Boletin de la Sociedad Espanola de Ceramica y Vidrio. 2023;. doi:10.1016/j.bsecv.2023.01.005 .
Matović, Branko, Maletaškić, Jelena, Maksimović, Vesna, Dimitrijević, Stevan P., Todorović, Bratislav, Pejić, Milan, Zagorac, Dejan, Zagorac, Jelena, Zeng, Yu-Ping, Cvijović-Alagić, Ivana, "Multicomponent solid solution with pyrochlore structure" in Boletin de la Sociedad Espanola de Ceramica y Vidrio (2023), https://doi.org/10.1016/j.bsecv.2023.01.005 . .