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Enhancement of giant magento-impedance effect using LC resonance

  • Z. M. Wu
  • , Z. J. Zhao
  • , L. P. Liu
  • , H. Lin
  • , J. K. Cheng
  • , J. X. Yang
  • , X. L. Yang

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, resonance enhancement of giant magneto-impedance (GMI) effect in Fe-based Fe"7"3". "5Cu"1Nb"3Si"1"3"."5B"9 glass-coated microwires was investigated. A new method was adopted by sputtering a copper layer in the outside of the Fe-based glass-coated wire. A capacitance forms between the ferromagnetic core and outer copper layer, where the glass insulator works as a dielectric layer. Therefore, the composite wire forms an LC resonance circuit (which consists of an inductor, represented by the letter L, and a capacitor, presented by the letter C) itself, resulting in an increase of GMI ratio from 250% to 330%. Meanwhile, the influence of resonance frequency on the GMI effect was discussed.

Original languageEnglish
Pages (from-to)87-90
Number of pages4
JournalSurface Review and Letters
Volume15
Issue number1-2
DOIs
StatePublished - 2008

Keywords

  • Giant magneto-impedance effect
  • LC resonance
  • resonance frequency

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