The electrical properties of codoping LaInO3 perovskite
- Авторлар: Belova K.1,2, Egorova А.1,2, Pachina S.2, Tarasova N.1,2, Animitsa I.1,2
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Мекемелер:
- Institute of High Temperature Electrochemistry, UB RAS
- Ural Federal University named after the first President of Russia, B. N. Yeltsin
- Шығарылым: Том 69, № 1 (2024)
- Беттер: 120-130
- Бөлім: НЕОРГАНИЧЕСКИЕ МАТЕРИАЛЫ И НАНОМАТЕРИАЛЫ
- URL: https://journals.rcsi.science/0044-457X/article/view/257668
- DOI: https://doi.org/10.31857/S0044457X24010145
- EDN: https://elibrary.ru/ZYRFMQ
- ID: 257668
Дәйексөз келтіру
Аннотация
This paper is devoted to the study of LaInO3 based co-doped materials. Solid solutions in which lanthanum is substituted for strontium have sufficiently high conductivity values, but a low level of oxygen deficiency is realized. Mg2+ and Ca2+ ions were chosen as co-dopants for the B sublattice. Both series of the investigated La0.9Sr0.1In1-xCaxO2.95–0.5x and La0.9Sr0.1In1-yMgyO2.95-0.5y solid solutions crystallize in orthorhombic symmetry with sp. gr. Pnma. The ionic conductivity in a dry atmosphere is determined by the oxygen ions transport. Oxygen-ion transfer in solid solutions is ~30–40% at high temperatures (T > 700°C) and increases to >80% as the temperature decreases to 400–300°C. The substitution Ca2+ with In3+ increases the electrical conductivity of the oxygen ions; the highest values are achieved for the compositions La0.9Sr0.1In0.95Ca0.05O2.925 and La0.9Sr0.1In0.9Ca0.1O2.9. The introduction of Mg2+ co-dopant at the In3+ positions leads to a decrease in ionic conductivity compared to La0.9Sr0.1InO2.95. The effects of changing oxygen mobility with changing geometric factors (cell volume, critical radius) are discussed.
Негізгі сөздер
Толық мәтін
Авторлар туралы
K. Belova
Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University named after the first President of Russia, B. N. Yeltsin
Email: OAV-hn@yandex.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
А. Egorova
Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University named after the first President of Russia, B. N. Yeltsin
Хат алмасуға жауапты Автор.
Email: OAV-hn@yandex.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
S. Pachina
Ural Federal University named after the first President of Russia, B. N. Yeltsin
Email: OAV-hn@yandex.ru
Ресей, Yekaterinburg, 620002
N. Tarasova
Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University named after the first President of Russia, B. N. Yeltsin
Email: OAV-hn@yandex.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
I. Animitsa
Institute of High Temperature Electrochemistry, UB RAS; Ural Federal University named after the first President of Russia, B. N. Yeltsin
Email: OAV-hn@yandex.ru
Ресей, Yekaterinburg, 620002; Yekaterinburg, 620002
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