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Changes in the Magnetic Structure of Multiferroic BiFe0.80Cr0.20O3 with Temperatureстатья
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: 1 августа 2019 г.
- Авторы: Rusakov V.S., Pokatilov V.S., Sigov A.S., Belik A.A., Matsnev M.E.
- Журнал: Physics of the Solid State
- Том: 61
- Номер: 6
- Год издания: 2019
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1030
- Последняя страница: 1036
- DOI: 10.1134/S1063783419060192
- Аннотация: The results of a Mössbauer study of the magnetic structure of multiferroic BiFe0.80Cr0.20O3 in the temperature range of 5–550 K are presented. It is found that a collinear antiferromagnetic structure of the G type is present in BiFe0.80Cr0.20O3 at temperatures below 260 K. Above 260 K, an anharmonic spin wave with a magnetic anisotropy of the easy-axis type with a high value of the anharmonicity parameter m arises. With a further increase in the temperature, the m parameter decreases and tends to zero at T ~ 420 K, at which a harmonic spin wave comes into existence. Above a temperature of about 420 K, the m parameter increases again and the spin wave becomes anharmonic with an easy-plane magnetic anisotropy. At the Néel temperature, TN = 505 ± 10 K, the sample undergoes a transition from the magnetically ordered to the paramagnetic state. The change in the type of magnetic anisotropy at T ~ 420 K is explained by competing contributions of different signs to the effective magnetic anisotropy constant and their different temperature dependence for the BiFe0.80Cr0.20O3 multiferroic.
- Добавил в систему: Русаков Вячеслав Серафимович