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Dynamics of first- and second-order phase transitions in amorphous magnetooptic TbFeCo filmsстатья
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: Agranat M.B., Ashitkov S.I., Kirillin A.V., Fortov V.E., Anisimov S.I., Granovskii A.B., Kondratenko P.S.
- Журнал: JETP Letters
- Том: 67
- Номер: 11
- Год издания: 1998
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 953
- Последняя страница: 958
- DOI: 10.1134/1.567773
- Аннотация: The dynamics of phase transformations in thin amorphous TbFeCo films under the action of similar to 1 ps laser pulses is investigated. The films are heated to the Curie temperature in the amorphous state (T-C1), to the crystallization temperature (T-ac), and to the Curie temperature in the crystalline phase (T-C2) The change in magnetization is detected by Faraday magnetooptic effect during and after the action of the heating pulse. A static external magnetic field H similar to 1-12 kOe, whose flux lines are directed perpendicular to the plane of the film, is used in the experiments. Amorphous TbFeCo films possess a perpendicular magnetic anisotropy, which on crystallization becomes reoriented in the plane of the film. It is observed that crystallization and magnetization reorientation occur during the heating pulse (within similar to 1 ps). The spin subsystem is heated to the Curie temperature several picoseconds after the end of the laser pulse. The characteristic spin relaxation time is similar to 10 ps. A model of the dynamics of the electronic, spin, and phonon subsystems that makes it possible to explain the experimental results is proposed on the basis of the data obtained. (C) 1998 American Institute of Physics. [S0021-3640(98)01311-5].
- Добавил в систему: Грановский Александр Борисович