中国物理B ›› 2008, Vol. 17 ›› Issue (6): 2263-2267.doi: 10.1088/1674-1056/17/6/054

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Influence of shape anisotropy on microwave complex permeability in carbonyl iron flakes/epoxy resin composites

温福昇, 乔亮, 周栋, 左文亮, 伊海波, 李发伸   

  1. Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2007-11-11 修回日期:2007-12-03 出版日期:2008-06-20 发布日期:2008-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 90505007 and 10774061).

Influence of shape anisotropy on microwave complex permeability in carbonyl iron flakes/epoxy resin composites

Wen Fu-Sheng(温福昇)†, Qiao Liang(乔亮), Zhou Dong(周栋), Zuo Wen-Liang(左文亮), Yi Hai-Bo(伊海波), and Li Fa-Shen (李发伸)   

  1. Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2007-11-11 Revised:2007-12-03 Online:2008-06-20 Published:2008-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 90505007 and 10774061).

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摘要： To explore the mechanism of carbonyl iron flake composites for microwave complex permeability, this paper investigates the feature of the flakes. The shape anisotropy was certified by the results of the magnetization hysteresis loops and the M\"{o}ssbauer spectra. Furthermore, the shape anisotropy was used to explain the origin of composite microwave performance, and the calculated results agree with the experiment. It is believed that the shape anisotropy dominates microwave complex permeability, and the natural resonance plays main role in flake.

关键词: carbonyl iron flake, complex permeability, shape anisotropy, M?ssbauer spectroscopy

Abstract: To explore the mechanism of carbonyl iron flake composites for microwave complex permeability, this paper investigates the feature of the flakes. The shape anisotropy was certified by the results of the magnetization hysteresis loops and the Mössbauer spectra. Furthermore, the shape anisotropy was used to explain the origin of composite microwave performance, and the calculated results agree with the experiment. It is believed that the shape anisotropy dominates microwave complex permeability, and the natural resonance plays main role in flake.

Key words: carbonyl iron flake, complex permeability, shape anisotropy, M$\ddot{\rm o}$ssbauer spectroscopy

中图分类号:  (Magnetization curves, hysteresis, Barkhausen and related effects)

  • 75.60.Ej
75.30.Gw (Magnetic anisotropy) 75.50.-y (Studies of specific magnetic materials) 76.80.+y (M?ssbauer effect; other γ-ray spectroscopy)