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GIANT MAGNETO-IMPEDANCE EFFECT OF MAGNETRON SPUTTEREDNi80Fe20/CuCOMPOSITE WIRES

Author

Listed:
  • Q. ZHANG

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • Q. M. MAO

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • J. Z. RUAN

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • Q. J. WANG

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • X. L. YANG

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • Z. J. ZHAO

    (Engineering Research Center for Nanophotonics, and Advanced Instrument, Ministry of Education, Department of Physics, East China Normal University, Shanghai 200062, China)

  • H. L. SEET

    (Department of Mechanical Engineering, National University of Singapore, Singapore, 119260, Singapore)

  • X. P. LI

    (Department of Mechanical Engineering, National University of Singapore, Singapore, 119260, Singapore)

Abstract

In this work,Ni80Fe20/Cucomposite wires of length 50 mm, consisting aCucore of diameter 100 μm, coated with a layer ofNi80Fe20, were produced by RF magnetron sputtering. To obtain a uniform coating, the wires were spun during sputtering by a homemade system. The results showed that the spinning speed might affect the maximum MI ratio and the magnetic properties. The MI ratio of the sputtered wires increases with the wire spinning speed in the magnetron sputtering. The film thickness had a significant effect on the magnitude and the optimum frequency of the giant magneto-impedance effect. The maximum MI ratio can reach about 247.4% for the specimen with aNi80Fe20coating thickness of 2.81 μm at 400 kHz. This large MI effect, obtained at such low frequency range, was correlated with the electromagnetic interaction between the inner core and the magnetic coating.

Suggested Citation

  • Q. Zhang & Q. M. Mao & J. Z. Ruan & Q. J. Wang & X. L. Yang & Z. J. Zhao & H. L. Seet & X. P. Li, 2008. "GIANT MAGNETO-IMPEDANCE EFFECT OF MAGNETRON SPUTTEREDNi80Fe20/CuCOMPOSITE WIRES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 15(06), pages 753-756.
    • Handle: RePEc:wsi:srlxxx:v:15:y:2008:i:06:n:s0218625x08011019
    DOI: 10.1142/S0218625X08011019
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