Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique
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URI (для ссылок/цитирований):
https://doi.org/10.1080/00150193.2020.1722883https://elib.sfu-kras.ru/handle/2311/143210
Автор:
Pugachev, A. M.
Zaytseva, I. V.
Malinovsky, V. K.
Surovtsev, N. V.
Gorev, M. V.
Ivleva, L. I.
Lykov, P. A.
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Кафедра теплофизики
Дата:
2020-05Журнал:
FerroelectricsКвартиль журнала в Scopus:
Q3Квартиль журнала в Web of Science:
Q4Библиографическое описание:
Pugachev, A. M. Temperature dependence of the spontaneous polarization, acoustic and strain anomalies in strontium barium niobate crystals of different chemical compositions probed by the second harmonic generation technique [Текст] / A. M. Pugachev, I. V. Zaytseva, V. K. Malinovsky, N. V. Surovtsev, M. V. Gorev, L. I. Ivleva, P. A. Lykov // Ferroelectrics. — 2020. — Т. 560 (№ 1). — С. 54-60Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
In SrxBa1−xNb2O6 crystals (x = 0.33, 0.5, 0.61, and 0.75), temperature dependences of spontaneous polarization, strain, elastic modules, and second harmonic generation (SHG) signal are compared. It is revealed that SHG describes the temperature dependences of dipole moments in polar nanoregions in paraelectric phase. In the vicinity of the phase transition in paraelectric phase, SHG reflects the temperature behavior of relatively large and long-lived polar asymmetric regions as indicated by the presence of the intermediate temperature range on the temperature dependence of this nonlinear response.