Abstract Ferromagnetic resonance is introduced to examine the microwave frequency response of NiFe/IrMn bilayers, patterned as antidot arrays. In the experiment, field direction dependence on mode is obtained by rotating the applied magnetic field. We find that at a given resonance frequency, the dependence of the resonance field on the angle has a tendency of sinusoid/cosine variation in the experiment. From micromagnetic simulation it can be seen that spin waves are localized between dots from a given mode profile. This is caused by a demagnetization distribution with a larger value in the center of the two nearest dots than that of the next-nearest dots.
(Other topics in magnetic properties and materials)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11304407) and the Scientific Research Foundation for Returned Scholars, Ministry of Education of China (Grant No. 47).
Corresponding Authors:
Hu Chun-Lian
E-mail: clhu@cqjtu.edu.cn
Cite this article:
Hu Chun-Lian (胡春莲), Liao Leng (廖棱), Stamps R Angle-dependent spin waves in antidot bilayers 2014 Chin. Phys. B 23 127501
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