Amorphous glass-covered magnetic wires for sensing applications

被引:30
作者
Chiriac, H
Ovari, TA
Pop, G
Barariu, F
机构
[1] Institute of Technical Physics, 47 Mangeron Blvd.
关键词
amorphous glass-covered wires; magnetic properties; soft magnetic materials; magnetic sensors;
D O I
10.1016/S0924-4247(97)80182-3
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
Amorphous glass-covered magnetic wires consist of a cylindrical metallic core with diameters of 3 to 25 mu m covered by a glass coating with a thickness of 2 to 15 mu m, such wires being obtained directly from the melt by the glass-coated melt spinning method. Amorphous glass-covered wires were introduced in 1974 and were studied up to the early 1980s when they were disregarded; the appearance of in-rotating-water quenched amorphous wires attracted much more interest. These wires have been practically reconsidered in the last two years since their many application possibilities were not fully investigated during previous studies. In this paper we report the application related magnetic properties of the AGCMW from three important classes with respect to the sign of their magnetostriction constant lambda:Fe-based (lambda > 0), Co-based (lambda < 0) and Co-based wires with a small amount of Fe (lambda less than or equal to 0). We also present the tailoring possibilities for their magnetic properties, which are mainly determined for a given composition by the influence of their dimensional characteristics (metallic core diameter, glass cover thickness, their ratio) on these properties, thus offering a more powerful tool for controlling their magnetic behavior as compared to the case of in-rotating-water quenched wires. The advantages of using amorphous glass-covered wires in magnetic sensors and the basic operating principles of such sensors are also presented. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:243 / 251
页数:9
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