Тип публикации: статья из журнала
Год издания: 2008
Идентификатор DOI: 10.1134/s1063783408010150
Ключевые слова: 75.30.Gw, 76.50.+g
Аннотация: The antiferromagnetic resonance in single crystals of the YFe3(BO3)4-GdFe3(BO3)4 system is studied in the frequency range 25–140 GHz and the temperature range 4.2–50.0 K. It is established that the YFe3(BO3)4 crystal containing only the magnetic subsystem of Fe3+ ions is an antiferromagnet with an easy anisotropy plane. The temperaПоказать полностьюture dependences of the gaps in the antiferromagnetic resonance spectra of GdFe3(BO3)4 and Y x Gd1 − x Fe3(BO3)4 are used to calculate the contributions of the Fe3+ and Gd3+ subsystems to the magnetic anisotropy of these crystals. The contributions are found to be close in magnitude and have opposite signs. This leads to a relatively weak uniaxial anisotropy field in the crystals under investigation. Since the exchange interaction between the Gd3+ and Fe3+ ions magnetizes the magnetic subsystem of gadolinium, both subsystems start to contribute simultaneously at the Néel temperature of the iron subsystem.
Журнал: Physics of the Solid State
Выпуск журнала: Т.50, №1
Номера страниц: 79-83
ISSN журнала: 10637834
Место издания: Санкт-Петербург
Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)