Low-field microwave absorption and magnetoimpedance in glass-coated and uncoated CoFeBSI microwires

被引：2
|
作者：
Montiel, H. [1 ]
Alvarez, G.
Gutierrez, M. P.
Zarnorano, R.
Valenzuela, R.
机构：
[1] Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
[3] Inst Politecn Nacl, Escuela Super Fis & Matemat, Mexico City 07738, DF, Mexico
来源：
SENSOR LETTERS | 2007年 / 5卷 / 01期
关键词：
amorphous wires; ferromagnetic resonance; magnetoimpeclance;
D O I：
10.1166/sl.2007.031
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Microwave absorption measurements were carried out on glass-uncoated amorphous microwires of 24, 12, and 7 mu m in metallic core diameter. LFA spectra show a maximum and minimum on the magnetic field cycle sweep, indicating an anisotropy field of 1.4 Oe for 12 and 24 mu m and 2.4 Oe for 7 Am microwire diameters. When comparing these results with those obtained for glass-coated microwires of the same nominal composition, we observed a decrease in the anisotropy field, as a result of the absence of the magnetoelastic contribution which was eliminated by removing the glass from the microwires. Giantmagnetoimpedance measurements at 10 MHz show an anisotropy field of 1.4 Oe for 12 and 24 mu m and 2.4 Oe for 7 mu m microwire diameters, in very good agreement with LFA results.
引用
收藏
页码：58 / 60
页数：3
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