中国物理B ›› 2007, Vol. 16 ›› Issue (6): 1725-1727.doi: 10.1088/1009-1963/16/6/040

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The study of the shape anisotropy in patterned permalloy films

翟亚1, 翟宏如2, 张栋3   

  1. (1)Department of Physics, Southeast University, Nanjing 210096, China ; (2)National Laboratory of Solid Microstructure, Center for Materials Analysis, Nanjing University, Nanjing 210093, China; (3)School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China
  • 收稿日期:2006-09-17 修回日期:2007-01-05 出版日期:2007-06-20 发布日期:2007-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No~50171020) and the Foundation for youth of Liaocheng University (Grant No~X051050).

The study of the shape anisotropy in patterned permalloy films

Zhang Dong(张栋)a) b)† , Zhai Ya(翟亚)b), and Zhai Hong-Ru(翟宏如)c)   

  1. a School of Physics Science and Information Engineering, Liaocheng University, Liaocheng 252059, China; b Department of Physics, Southeast University, Nanjing 210096, China; c National Laboratory of Solid Microstructure, Center for Materials Analysis, Nanjing University, Nanjing 210093, China
  • Received:2006-09-17 Revised:2007-01-05 Online:2007-06-20 Published:2007-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No~50171020) and the Foundation for youth of Liaocheng University (Grant No~X051050).

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摘要： In this paper a systematic ferromagnetic resonance study shows that an in-plane magnetic anisotropy in the patterned micron octagon permalloy (Ni$_{80}$Fe$_{20})$ elements is mainly determined by the element geometry. The easy-axis is along the edge of the elements, and the hard-axis is along the diagonal. The shape anisotropy of the octagon elements is determined by square and equilateral octagon, and the theoretical calculation was studied on the shape anisotropy. The shape anisotropy of rectangular was calculated by using the same theory.

关键词: patterned film, shape anisotropy, ferromagnetic resonance

Abstract: In this paper a systematic ferromagnetic resonance study shows that an in-plane magnetic anisotropy in the patterned micron octagon permalloy (Ni$_{80}$Fe$_{20})$ elements is mainly determined by the element geometry. The easy-axis is along the edge of the elements, and the hard-axis is along the diagonal. The shape anisotropy of the octagon elements is determined by square and equilateral octagon, and the theoretical calculation was studied on the shape anisotropy. The shape anisotropy of rectangular was calculated by using the same theory.

Key words: patterned film, shape anisotropy, ferromagnetic resonance

中图分类号:  (Magnetic anisotropy)

  • 75.30.Gw
75.50.Bb (Fe and its alloys) 75.70.Ak (Magnetic properties of monolayers and thin films) 76.50.+g (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)