The angular dependence of ferromagnetic resonance in exchange coupling bilayer films with stress anisotropy
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In this work, the ferromagnetic resonance modes are worked out considering in-plane anisotropy and out-of-plane anisotropy, respectively, in ferromagnetic/antiferromagnetic bilayer films. The ferromagnetic resonance frequency, magnetic susceptibility, and field linewidth with stress anisotropy have been investigated by using ferromagnetic resonance method. The results show that while applied magnetic field is applied along some directions, the ferromagnetic resonance frequency can be enhanced and field linewidth can be broaden by increasing the intensity of stress anisotropy field. Furthermore, the effect of stress anisotropy field proves substantially stronger for out-of-plane anisotropy than in-plane anisotropy.
KeywordsFerromagnetic resonance Magnetic susceptibility Stress anisotropy Field linewidth
PACS Nos.76.50.+g 75.70.-i 75.70.cn
This work is supported by the National Natural Science Foundation of China under Grant No. 11072104, and by the Science and Technology Research Projects in Colleges and Universities of Inner Mongolia of China under Grant No. NJZY16014, and by the Nature Science Foundation of Inner Mongolia of China under Grant No. 2012MS110.