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Synthesis of Perovskite-Type BiScO3 Ceramics and their Dielectric and Infrared Characterizationстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Serovaiskii Alexandr, Kutcherov Vladimir G., Vinokurov Vladimir A., Serebryakov Sergei G., Trotsenko Vasily G., Zhukova Elena S., Bush Alexander A., Shanenko Arkady A., Vasenko Andrey S., Stolyarov Vasily S., Kozlov Vladislav I.
- Журнал: Journal of Physical Chemistry Letters
- Том: 13
- Номер: 43
- Год издания: 2022
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 10114
- Последняя страница: 10119
- DOI: 10.1021/acs.jpclett.2c02898
- Аннотация: BiScO3 compound was obtained in the form of dense ceramic with a perovskite-type structure, and its complex characterization was determined for the first time. The corresponding synthesis procedure is described in detail. It is demonstrated that the temperature region of the phase stability at atmospheric pressure lies at T < 700 °C (973 K). It is shown that the crystal structure of the BiScO3 ceramic is centrosymmetric. Dielectric measurements of the synthesized sample performed at frequencies 25 Hz to 1 MHz and at temperatures 10–340 K show no changes typical for phase transition. Room-temperature infrared (30–15600 cm–1) and Raman (90–2000 cm–1) spectra of the prepared BiScO3 ceramic are measured, and information on the parameters of phonon resonances is obtained. The number of infrared modes exceeds that predicted by the factor group analysis of the noncentrosymmetric space group C2. The reason for selection rules violation can be associated with the disorder of the crystal structure and local distortions induced by the lone pair of electrons of Bi3+
- Добавил в систему: Столяров Василий Сергеевич