Structure, microstructure, and functional properties of modified sodium niobate ceramics

Авторы: Politova E.D., Kaleva G.M., Mosunov A.V., Sadovskaya N.V., Fortalnova E.A., Shur V.Ya, Ushakov A.D., Faizullin M.Z.
Журнал: Ferroelectrics
Том: 618
Номер: 6
Год издания: 2024
Издательство: Taylor and Francis
Местоположение издательства: United States
Первая страница: 1422
Последняя страница: 1430
DOI: 10.1080/00150193.2024.2305582
Аннотация: Ceramic samples of new compositions (1−x)(0.9NaNbO3 − 0.1BaTiO3) − xBaZrO3 (x = 0 ÷ 0.05) modified by SiO2 oxide additive were prepared; their phase composition, structure parameters, microstructure, dielectric and ferroelectric properties were studied. Formation of a phase with a perovskite structure with a tetragonal unit cell was established, which volume increased due to partial replacement of A and B cations by Ba2+ and Zr4+ ones with large ionic radii. Decrease in the temperature of ferroelectric phase transitions and corresponding increase in polarization and electrocaloric effect indicates a positive effect of doping on the functional properties of sodium niobate-based ceramics.
Добавил в систему: Мосунов Александр Викторович

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