›› 2014, Vol. 23 ›› Issue (12): 127501-127501.doi: 10.1088/1674-1056/23/12/127501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Angle-dependent spin waves in antidot bilayers

胡春莲a, 廖棱a, Stamps Rb   

  1. a Chongqing Jiaotong University, Chongqing 400074, China;
    b SUPA-School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK
  • 收稿日期:2014-03-20 修回日期:2014-06-13 出版日期:2014-12-15 发布日期:2014-12-15
  • 基金资助:
    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).

Angle-dependent spin waves in antidot bilayers

Hu Chun-Lian (胡春莲)a, Liao Leng (廖棱)a, Stamps Rb   

  1. a Chongqing Jiaotong University, Chongqing 400074, China;
    b SUPA-School of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK
  • Received:2014-03-20 Revised:2014-06-13 Online:2014-12-15 Published:2014-12-15
  • Contact: Hu Chun-Lian E-mail:clhu@cqjtu.edu.cn
  • Supported by:
    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).

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摘要： 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.

关键词: spin waves, antidot, magnetic property

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.

Key words: spin waves, antidot, magnetic property

中图分类号:  (Spin waves)

  • 75.30.Ds
75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures)) 75.90.+w (Other topics in magnetic properties and materials)