Effective demagnetizing factors in ferromagnetic resonance equations
Effective demagnetizing factors in ferromagnetic resonance equations
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DOI：
10.1016/s0304-8853(02)01504-4
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发表时间：
2003-06
影响因子：
2.7
通讯作者：
O. Kohmoto
中科院分区：
文献类型：
--
作者：
O. Kohmoto
本文提出了一种利用Kittel铁磁共振公式计算有效退磁因子（Nxe，Nye）的简便方法。有效退磁因子由各向异性能（G）和静磁场方向（θ，φ）表示。利用这种方法，得到了静磁场在薄膜平面内旋转时，具有单轴各向异性和四重各向异性的薄膜的共振方程。计算了六种布置：（1）垂直各向异性，（2）面内各向异性，（3）斜晶（001）面，（4）斜晶（011）面，（5）斜晶（111）面，和（6）斜向各向异性膜。
A simple method of deriving effective demagnetizing factors (Nxe,Nye) for the use of Kittel's ferromagnetic resonance formula is reported. The effective demagnetizing factors are expressed by an anisotropy energy (G) and a static field direction (θ,φ). By this derivation method, the resonance equations of thin films having a uniaxial or a four-fold anisotropy are obtained when a static field is rotated in the film plane. Six arrangements are calculated: (1) perpendicular anisotropy, (2) in-plane anisotropy, (3) cubic-crystal (001) face, (4) cubic-crystal (011) face, (5) cubic-crystal (111) face, and (6) oblique anisotropy films.