Improvement of Giant Magneto-Impedance Effect in Fe-Based Nanocrystalline Wires

Su Qin Feng; Yin Feng Li; Jian Yong Wang; Chun Hui Feng; Shuang Yi Zhao; Xi Mei Zhao

doi:10.4028/www.scientific.net/AMR.284-286.2303

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Improvement of Giant Magneto-Impedance Effect in...

Improvement of Giant Magneto-Impedance Effect in Fe-Based Nanocrystalline Wires

Abstract:

In order to obtain materials with more ideal GMI effect, (DZ/Z）max, the substitution effects of R (R = Co, Ni and Cr) for Fe in Fe_63.5R₁₀Cu₁Nb₃Si_13.5B₉ soft magnetic wires have been studied. We found that although the Finemet composition shown excellent GMI effect, the substitution of Co can raise notably the field sensitivity, Q, Ni makes a little improvements of (DZ/Z）max, and Q, and Cr diminishes the undesirable hysteretic effect. In additions, the influence of annealing conditions upon the GMI effect of the best composition Fe_63.5Cr₁₀Cu₁Nb₃Si_13.5B₉ was also investigated. It indicated that the sample obtained by the ways of Joule heating under the application of suitable tensile stress exhibits 200% and 30%¤Oe for (DZ/Z）max and Q, respectively. This sample can serve as a proper choice for magnetic sensors.

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Advanced Materials Research (Volumes 284-286)

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2303-2306

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.284-286.2303

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Online since:

July 2011

Authors:

Su Qin Feng, Yin Feng Li, Jian Yong Wang, Chun Hui Feng, Shuang Yi Zhao, Xi Mei Zhao

Keywords:

Giant Magneto-Impedance Effect, Nanocrystalline Wires, Stress-Annealing

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