物理学报2012，Vol.61Issue(16)：427-432,6.
垂直场下磁性薄膜中的铁磁共振现象
Ferromagnetic resonance phenomenon of magnetic thin film under a perpendicular field
摘要
Abstract
Regarding ferromagnetic resonance frequency as a function of the perpendicular external magnetic field, the ferromagnetic res- onance phenomenon is investigated. The results show that for the case where the external magnetic field is parallel to the its plane and the magnetic thin film has a perpendicular uniaxial magnetiocrystalline anisotropy, magnetic resonance frequency is divided into two categories, i.e., low frequency branch and high frequency branch, their specific relation depends on the magnetic anisotropy of the magnetic film; when external magnetic field is perpendicular to the systemic plane, the magnetic resonance frequency displays only a branch with the change of external magnetic field. In general, the magnetic resonance frequency decreases with the increase of the external magnetic field nonlinearly and monotonically. However, when the ratio between the cubic magnetocrystalline anisotropic field Hkl and uniaxial magnetocrystalline anisotropic field Ha is about 2/3 〈 ｜Hkl/Ha｜ 〈 1, the magnetic resonance frequency increases with the increase of external magnetic field, which is in good agreement with the experimental results. The results show that through magnetic resonance spectrum, the vertical magnetic anisotropy in magnetic thin film can be distinguished.关键词
铁磁共振/高频支/低频支Key words
ferromagnetic resonance/high frequency branch/low frequency branch分类
数理科学引用本文复制引用
顾文娟,潘靖,胡经国..垂直场下磁性薄膜中的铁磁共振现象[J].物理学报,2012,61(16):427-432,6.基金项目
国家自然科学基金（批准号：10974170）和国家自然科学青年基金（批准号：11104239）资助的课题. （）
