Optimization of giant magnetoimpedance in Co-rich amorphous microwires

被引：117
作者：
Zhukova, V [1 ]
Chizhik, A
Zhukov, A
Torcunov, A
Larin, V
Gonzalez, J
机构：
[1] UPV, EHU, Dept Fis Mat, San Sebastian 20080, Spain
[2] Natl Acad Sci Ukraine, UA-310164 Kharkov, Ukraine
[3] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[4] AmoTec Ltd, Kishinev, Moldova
[5] Tamag SL, Madrid, Spain
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2002年 / 38卷 / 05期
关键词：
giant magnetoimpedance effect; glass-coated microwires; Kerr effect; magnetic anisotropy;
D O I：
10.1109/TMAG.2002.802397
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The dependences of the magnetoimpedance ratio DeltaZ/Z of soft magnetic Co67Fe3.85Ni1.45B11.5Si14.5Mo1.7 glass-coated amorphous microwires with various geometric ratio p upon axial magnetic field H has been measured for the frequency f range 0.06-15 MHz, driving current amplitude I of 0.75-2 mA, and H up to 2400 A/m. Surface hysteresis loops have been measured by transverse magnetooptical Kerr effect (MOKE). A maximum relative change in the giant magnetoimpedance (GMI) ratio DeltaZ/Z up to around 615% is observed at f = 10 MHz and I = 0.75 mA in the sample with rho approximate to 0.98. Application of de bias current strongly affects the GMI ratio. A maximum of GMI ratio occurs approximately at the same field as the coercivity of surface loops.
引用
收藏
页码：3090 / 3092
页数：3
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