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Magnetic circular dichroism in the canted antiferromagnet α-Fe2O3: Bulk single crystal and nanocrystals
Автор | Ivantsov, R. | |
Автор | Ivanova, O. | |
Автор | Zharkov, S. | |
Автор | Molokeev, M. | |
Автор | Krylov, A. | |
Автор | Gudim, I. | |
Автор | Edelman, I. | |
Дата внесения | 2021-08-13T09:30:41Z | |
Дата, когда ресурс стал доступен | 2021-08-13T09:30:41Z | |
Дата публикации | 2020-03 | |
Библиографическое описание | Ivantsov, R. Magnetic circular dichroism in the canted antiferromagnet α-Fe2O3: Bulk single crystal and nanocrystals [Текст] / R. Ivantsov, O. Ivanova, S. Zharkov, M. Molokeev, A. Krylov, I. Gudim, I. Edelman // Journal of Magnetism and Magnetic Materials. — 2020. — Т. 498. — С. 1-8 | |
ISSN | 03048853 | |
URI (для ссылок/цитирований) | https://www.sciencedirect.com/science/article/pii/S0304885319325788?via%3Dihub | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/142518 | |
Описание | Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала. | |
Аннотация | Hematite, α-Fe2O3, is a canted antiferromagnet with the Neel temperature of 960 K. The Morin transition, which occurs when the temperature is lowered to ~260 K, when the magnetic moments of the sublattices become strictly antiparallel to each other and the resulting magnetic moment disappears, is a characteristic feature of this compound. Detailed investigations are presented here of the magneto-optical effects in the α-Fe2O3 nanoparticles in the transmitted light and in the α-Fe2O3 single crystal in the reflected light. Two types of magnetooptic features were revealed in the magnetic circular dichroism (MCD) spectrum. Some of them described by the Gauss line shape were associated with one-ion d-d transitions. Others were described by the S-shaped line with the inflection points corresponding to the absorption maxima. Last features were assigned to the pair excitonmagnon transitions. An exceptionally strong S-shaped line at 2.0–2.5 eV appeared to be a unique feature of α- Fe2O3 distinguishing it from other iron oxide compounds. The origin of the high effectiveness of the pair excitonmagnon interaction giving rise to this strong S-shaped feature in the MCD spectrum of α-Fe2O3 is discussed | |
Тема | Hematite | |
Тема | α-Fe2O3 | |
Тема | Optical absorption | |
Тема | Magnetic circular dichroism | |
Тема | Ellipsometric parameters | |
Тема | Raman scattering | |
Тема | One-ion d-d transitions | |
Тема | Pare exciton-magnon transitions | |
Название | Magnetic circular dichroism in the canted antiferromagnet α-Fe2O3: Bulk single crystal and nanocrystals | |
Тип | Journal Article | |
Тип | Published Journal Article | |
Страницы | 1-8 | |
Дата обновления | 2021-08-13T09:30:41Z | |
DOI | 10.1016/j.jmmm.2019.166208 | |
Институт | Институт инженерной физики и радиоэлектроники | |
Институт | Политехнический институт | |
Подразделение | Кафедра экспериментальной физики и инновационных технологий | |
Подразделение | Кафедра материаловедения и технологии обработки материалов | |
Журнал | Journal of Magnetism and Magnetic Materials | |
Квартиль журнала в Scopus | Q2 | |
Квартиль журнала в Web of Science | Q2 |