| Original Articles |
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Giant Magneto-Impedance of Co50Ni22Ga28 Alloy with High Chemical Ordering |
| WANG Yan-Guo;WANG Hai-Ying;DAI Xue-Fang;WU Guang-Heng;DUAN Xiao-Feng |
| Institute of Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 |
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| Cite this article: |
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WANG Yan-Guo, WANG Hai-Ying, DAI Xue-Fang et al 2005 Chin. Phys. Lett. 22 2630-2632 |
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Abstract The microstructure of Co50Ni22Ga28 ribbon with the L10 structure is examined. The band-like morphology is observed. These bands with the width in a range of 40--200nm appear along the transverse direction of the ribbon. The giant magnetoimpedance (GMI) effect in this alloy is measured. The results show that Co50Ni22Ga28 exhibits a sharp peak of the GMI effect. The maximum GMI ratio up to 360% is detected. The GMI effect measured versus temperature shows large jumps of the magnetoimpedance amplitude at the reversal martensitic transformation temperature 240°C and Curie temperature 375°C respectively. The jump ratios of the magnetoimpedance amplitude examined at these temperatures are about 5 and 10, respectively.
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| Keywords:
68.37.Ps
43.Qt
75.47.De
75.47.Np
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Published: 01 October 2005
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| PACS: |
68.37.Ps
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(Atomic force microscopy (AFM))
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73
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(Electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures)
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43.Qt
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75.47.De
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(Giant magnetoresistance)
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75.47.Np
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(Metals and alloys)
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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