Giant magnetoimpedance in glass-covered amorphous microwires

被引：41
|
作者：
Kraus, L
Frait, Z
Pirota, KR
Chiriac, H
机构：
[1] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic
[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
[3] Natl Inst R&D Tech Phys, R-6600 Iasi 3, Romania
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2003年 / 254卷
关键词：
amorphous systems-soft magnetic; giant magnetoimpedance; ferromagnetic resonance; magnetomechanical coupling;
D O I：
10.1016/S0304-8853(02)00931-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GMI was investigated in amorphous Co-rich glass-covered microwires with very low magnetostriction constant. Internal stresses, induced in the metallic core by the glass coating, substantially reduce the magnitude of GMI. To improve GMI properties magnetoelastic coupling was reduced by a careful choice of alloy composition and by subsequent Joule-heat treatment. The maximum magnetoimpedance, DeltaZ/Z approximate to 600% measured at frequency 15 MHz, is already close to the theoretical value (1060%) and is one of the highest GMI amplitudes ever reported. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：399 / 403
页数：5
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