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Whitlockite solid solutions Ca9-xMxR(PO4)(7) (x = 1, 1.5; M = Mg, Zn, Cd; R = Ln, Y) with antiferroelectric propertiesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Teterskii A.V., Stefanovich S.Yu, Lazoryak B.I., Rusakov D.A.
- Журнал: Russian Journal of Inorganic Chemistry
- Том: 52
- Номер: 3
- Год издания: 2007
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 308
- Последняя страница: 314
- DOI: 10.1134/S0036023607030023
- Аннотация: Whitlockite solid solutions Ca9-x M (x) R(PO4)(7) (M = Mg, Zn, Cd; R = Ln, Y) were synthesized as powders and ceramics using solid-phase synthesis. Dielectric investigations and second harmonic generation (SHG) tests showed that ferroelectric (FE) phase transitions existing in samples with x = 0 change to antiferro-electric (AFE) transitions between two centrosymmetrical phases in samples with x = 1 or 1.5. The calcium-ion solid electrolyte conductivity in Ca9-x M (x) R(PO4)(7) at high temperatures appears either as a result of an antiferroelectric-paraelectric (AFE-PE) phase transition (for x = 1) or as a result of a separate phase transition near 1173 K (for x = 1.5). The appearance of dielectric properties in whitlockites is discussed with reference to the features of their polar and centrosymmetrical structures.
- Добавил в систему: Лазоряк Богдан Иосипович