Journal of East China Normal University(Natural Sc ›› 2013, Vol. 2013 ›› Issue (1): 115-120.

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Giant magneto-impedance on glass-coated microwires with copper layer

WANG Rui-li 1,2, RUAN Jian-zhong 2, KONG Xiang-hong 1,YANG Wei 1, WANG Jiang-tao 3, ZHAO Zhen-jie 2   

  1. 1. Teaching Foundation Department of Physics, Shanghai Ocean University, Shanghai 201306, China;
    2. Department of Physics, Engineering Research Center for Nanophotonics and Advanced Instrument, East China Normal University, Shanghai 200062, China;
    3. Software Engineering Insititute, East China Normal University, Shanghai 200062, China
  • Received:2012-02-01 Revised:2012-05-01 Online:2013-01-25 Published:2013-01-18

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Abstract: The amorphous wires of nominal compositions Fe73.0Cu1.0Nb2.0Si13.5B9.0 were prepared by glass-coating melt-spinning method. Then, the wires were annealed at 480~650 ℃ for 30 min in nitrogen atmosphere. The composite wires with copper layer using electroless deposition were produced, a thin layer of copper deposited onto the microwires annealed at 570 ℃. The morphology of composite microwires was observed using SEM. The giant magnetoimpedance effect on the samples was investigated. The results show that soft magnetic properties of the specimen can improve its MI ratio. The electromagnetic interactions between the ferromagnetic core and the copper layer can also affect MI ratio.

Key words: giant magneto-impedance effect, electroless deposition, skin effect, soft magnetic properties

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