Giant magneto-impedance effect on nanocrystalline microwires with conductive layer deposit

  • R. L. Wang
  • , Z. J. Zhao*
  • , L. P. Liu
  • , W. Z. Yuan
  • , X. L. Yang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

In this study, the giant magneto-impedance effect on Fe-based glass-coated nanocrystalline microwires with and without an additional outer copper layer was investigated. Experiment results showed that the magneto-impedance ratio of the wires with a layer of deposited copper is higher at low frequencies and lower at high frequencies (above 50MHz), as compared to that of the microwires without an outer copper layer. The peak MI magnetic field, corresponding to the maximum of the magneto-impedance ratio shifts towards higher field values with increasing coating thickness of copper layer. The results are explained in terms of electro-magnetic interactions between the conductive layer and the ferromagnetic core.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume285
Issue number1-2
DOIs
StatePublished - Jan 2005

Keywords

  • Eddy current
  • Giant magneto-impedance
  • Glass-coated
  • Nanocrystalline

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