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 and X. L. Yang ()
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Z. M. Wu: Department of Physics, East China Normal University, Shanghai 200062, China;
Z. J. Zhao: Department of Physics, East China Normal University, Shanghai 200062, China
L. P. Liu: Department of Physics, East China Normal University, Shanghai 200062, China
H. Lin: Department of Physics, East China Normal University, Shanghai 200062, China
J. K. Cheng: Department of Physics, East China Normal University, Shanghai 200062, China
J. X. Yang: Department of Physics, East China Normal University, Shanghai 200062, China
X. L. Yang: Department of Physics, East China Normal University, Shanghai 200062, China

Surface Review and Letters (SRL), 2008, vol. 15, issue 01n02, 87-90

Abstract: In this study, resonance enhancement of giant magneto-impedance (GMI) effect inFe-basedFe73.5Cu1Nb3Si13.5B9glass-coated microwires was investigated. A new method was adopted by sputtering a copper layer in the outside of theFe-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.

Keywords: Giant magneto-impedance effect; LC resonance; resonance frequency (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1142/S0218625X08011020

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