Journal of East China Normal University(Natural Sc ›› 2007, Vol. 2007 ›› Issue (5): 123-127.

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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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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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