Potassium–Sodium Ceramics Modified with Metal Oxide Additives: Synthesis, Microstructure, and Properties

Авторы: Kaleva G.M., Politova E.D., Mosunov A.V., Stefanovich S.Yu, Sadovskaya N.V.
Журнал: Russian Journal of Physical Chemistry A
Том: 97
Номер: 1
Год издания: 2023
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 137
Последняя страница: 141
DOI: 10.1134/s0036024423010144
Аннотация: Single phase ceramic samples of new compounds (1−x)(K0.5Na0.5)NbO3−xLa(Ag0.5Sb0.5)O3 (x = 0–0.15), modified by metal oxide additives ZnO, CuO, and MnO2, are prepared via a solid state reaction. The crystal structure, microstructure, and dielectric and ferroelectric properties of the samples are studied. It is established that a phase with a perovskite structure and an orthorhombic unit cell formed in each sample. Ferroelectric phase transitions are confirmed via dielectric spectroscopy. Generation of the second harmonic is observed, along with a drop in the temperature of transitions from the ferroelectric orthorhombic phase to the ferroelectric tetragonal phase, and then to the cubic paraelectric phase.
Добавил в систему: Мосунов Александр Викторович

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