Thermal stability, magnetic properties and GMI effect of Cr-doping amorphous CoFeSiB ribbons

被引：24

作者：

Song, Yiming ^{[1
]}

Jia, Min ^{[1
]}

Lin, Min ^{[1
]}

Li, Xiang ^{[2
]}

Lu, Wei ^{[1
]}

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, Shanghai 200092, Peoples R China

[2] Shanghai Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 201800, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 622卷

基金：

中国国家自然科学基金;

关键词：

Melt spinning; DSC; Amorphous alloys; Magnetic properties; GIANT MAGNETOIMPEDANCE; B-SI; IMPEDANCE; DEPENDENCE; ALLOYS; WIRES; BULK;

D O I：

10.1016/j.jallcom.2014.10.137

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The thermal stability, magnetic properties and GMI effect of amorphous Co68Fe7 -xCrxSi15B10 (x = 0, 1.5, 3, 4.5) ribbons were investigated in this paper. Thermal analysis results show that the crystallization temperatures of as-prepared ribbons were affected significantly by Cr doping. The saturation magnetization of ribbons decreases with increasing Cr content. Optimized Cr content of about 3 at.% gives lowest coercivity (similar to 0.1 A/m) and highest permeability (86,000). The maximum GMI value was achieved by optimizing the frequency and amplitude of driving ac current (2 MHz and 10 mA). The ribbon doped with 3 at.% Cr shows largest GMI value (76%) due to magnetic softness. (C) 2014 Elsevier B. V. All rights reserved.

引用

页码：500 / 503

页数：4

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