华东师范大学学报(自然科学版) ›› 2007, Vol. 2007 ›› Issue (5): 123-127.

• 物理学 电子学 • 上一篇    下一篇

LC共振增强巨磁阻抗效应

吴志明，赵振杰，刘龙平，杨燮龙   

  1. 华东师范大学 物理系，上海 200062
  • 收稿日期:2006-12-28 修回日期:2007-04-10 出版日期:2007-09-25 发布日期:2007-09-25
  • 通讯作者: 杨燮龙

Enhancement of Giant MagnetoImpedance Effect Using LC Resonance(Chinese)

WU Zhiming, ZHAO Zhen-jie,LIU Long-ping, YANG Xie-long   

  1. Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2006-12-28 Revised:2007-04-10 Online:2007-09-25 Published:2007-09-25
  • Contact: YANG Xie-long

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摘要： 通过一种新的方法，直接在Fe基玻璃包裹丝外溅射一层铜.研究发现，玻璃绝缘层在复合结构丝中充当电介质的作用，内芯层与外层铜耦合形成附加电容，从而使复合丝形成LC回路,其巨磁阻抗效应从原先的250％增强到330％.通过改变外铜层长度，研究了共振频率对巨磁阻抗效应的影响.

关键词: 巨磁阻抗效应, LC 共振, 共振频率, 巨磁阻抗效应, LC 共振, 共振频率

Abstract: In this study, resonance enhancement of Giant MagnetoImpedance effect in Febased glasscoated microwires was investigated. A new method was adopted by sputtering a copper layer in the outside of the Febased glasscoated wires. A capacitance was formed between the ferromagnetic core and outer copper layer, where the glass insulator works as dielectric layer. Therefore, the composite wire constructs a LC resonance circuit by itself, resulting in an increase of GMI ratio from 250% to 330%. Meanwhile, the influence of resonance frequency on the GMI effect was discussed.

Key words: LC resonance, resonance frequency, Giant MagnetoImpedance effect, LC resonance, resonance frequency

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