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Influence of an Electronic Field on the GMI Effect of Fe-based Nanocrystalline Microwire 被引量:2
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作者 Q.Zhang D.L.Chen +3 位作者 X.Li P.X.Yang J.H.Chu z.j.zhao 《Nano-Micro Letters》 SCIE EI CAS 2013年第1期13-17,共5页
In this work, a Fe-based nanocrystalline microwire of 20 mm in length and 25 μm in diameter was placed in the center of a 316 stainless steel pipe. The pipe was 500 μm in diameter and a little shorter than the micro... In this work, a Fe-based nanocrystalline microwire of 20 mm in length and 25 μm in diameter was placed in the center of a 316 stainless steel pipe. The pipe was 500 μm in diameter and a little shorter than the microwire. A series of voltages were applied on the pipe to study the influence of the electrical field on the Giant-Magneto-Impedance(GMI) effect of the microwire. Experimental results showed that the electronic field between the wire and the pipe reduced the hysteresis of the GMI effect. The results were explained based on equivalent circuit and eddy current consumptions analysis. 展开更多
关键词 GMI Eddy consumptions Electronic field Equivalent circuit
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Giant Magneto-impedance Effect in Composite Wires with Different Core Layer 被引量:1
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作者 R.L.Wang X.Li +3 位作者 X.H.Kong Y.X.Guo J.Z.Ruan z.j.zhao 《Nano-Micro Letters》 SCIE EI CAS 2013年第2期140-144,共5页
Composite structure materials were potential sensing elements for magnetic sensors due to Giant magnetoimpedance(GMI) effect. Two kinds of composite wires with different magnetic/non-magnetic structures were fabricate... Composite structure materials were potential sensing elements for magnetic sensors due to Giant magnetoimpedance(GMI) effect. Two kinds of composite wires with different magnetic/non-magnetic structures were fabricated by using electroless deposition methods and the magnetoimpedance properties were investigated. The maximum GMI ratio of 114% was acquired at 60 MHz in the composite wires with a ferromagnetic core, whereas, 116% of maximum GMI ratio was found in the composite wires with a conductive core at low frequency of 600 k Hz. These results exhibit that the GMI ratio reaches the maximum when magnetoresistance ratio ?R/R and magnetoinductance ratio ?X/X make the comparative contributions to the total magnetoimpedance(MI). The obvious GMI effect obtained in the composite wires with conductive core frequency may provide a candidate for applications in magnetic sensors, especially at low frequencies. 展开更多
关键词 Composite wires Electroless deposition Giant Magnetoimpedance effect RESISTIVITY
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Magneto-Impedance Effect of Composite Wires Prepared by Chemical Plating under DC Current 被引量:1
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作者 D.L.Chen X.Li +2 位作者 H.L.Pan H.Y.Luan z.j.zhao 《Nano-Micro Letters》 SCIE EI CAS 2014年第3期227-232,共6页
CuBe composite wires of 100 μm in diameter coated with a layer of NiCoP were prepared by a chemical plating method under DC current(CPUDC). The influences of DC current on coating morphology,deposition rate, composit... CuBe composite wires of 100 μm in diameter coated with a layer of NiCoP were prepared by a chemical plating method under DC current(CPUDC). The influences of DC current on coating morphology,deposition rate, composition, giant magneto-impedance(GMI) effect and magnetic properties were investigated.It was shown that the circumferential domain structure of coating layer was induced by the DC current going through the wires. A maximum GMI ratio of 870% was obtained in the composite wire prepared under 150 m A and tested at 180 k Hz. It is 30 times higher than that of the composite wire plated in the same condition by conventional chemical plating method, indicating that CPUDC is an easy and effective approach to obtain composite wires and its applications will be further extended on magnetic sensors. 展开更多
关键词 GMI Chemical plating Magnetic properties
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