Frequency dependence of magnetization and giant magneto impedance effect of amorphous wires
来源期刊：International Journal of Minerals Metallurgy and Materials2013年第4期
论文作者：Shu-ling Zhang Jian-fei Sun Da-wei Xing Da-qing Fang Lu-cai Wang
文章页码：375 - 378
摘 要：The frequency dependence of magnetization process and giant magneto impedance （GMI） effect of Co-rich melt-extracted amorphous wires was studied by Kerr effect and impedance analyzer, respectively. It is demonstrated that the transverse Kerr intensity and the corresponding GMI response increase with increasing frequency, which contributes to the upgraded skin effect. However, the skin depth has a slothful trend with frequency when it is up to the megahertz range, which gives rise to the transformation of magnetization. The process is much more sensitive to the direct current magnetic field and the sensitive change of the circular permeability, and GMI response is observed as its consequence. This proves that the evolution of circumferential magnetization and the corresponding permeability with the direct current magnetic field is the essence of GMI response, and a much more sensitive magnetization promises a better GMI response.
Shu-ling Zhang1,2，Jian-fei Sun2，Da-wei Xing2，Da-qing Fang1，Lu-cai Wang1
1. School of Materials Science and Engineering, Taiyuan University of Science and Technology2. School of Materials Science and Engineering, Harbin Institute of Technology
摘 要：The frequency dependence of magnetization process and giant magneto impedance （GMI） effect of Co-rich melt-extracted amorphous wires was studied by Kerr effect and impedance analyzer, respectively. It is demonstrated that the transverse Kerr intensity and the corresponding GMI response increase with increasing frequency, which contributes to the upgraded skin effect. However, the skin depth has a slothful trend with frequency when it is up to the megahertz range, which gives rise to the transformation of magnetization. The process is much more sensitive to the direct current magnetic field and the sensitive change of the circular permeability, and GMI response is observed as its consequence. This proves that the evolution of circumferential magnetization and the corresponding permeability with the direct current magnetic field is the essence of GMI response, and a much more sensitive magnetization promises a better GMI response.
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