Asymmetric magnetoimpedance effect in CoFeSiB amorphous ribbons by combination of field and current annealing for sensor applications

被引：22
作者：
Hajiali, Mohammadreza [1 ,2 ]
Mohseni, S. Majid [1 ]
Roozmeh, S. Ehsan [2 ]
Moradi, Mehrdad [3 ]
机构：
[1] Shahid Beheshti Univ, Dept Phys, Tehran 19839, Iran
[2] Univ Kashan, Dept Phys, Kashan 87317, Iran
[3] Univ Kashan, Inst Nanosci & Nanotechnol, Kashan 87317, Iran
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2016年 / 96卷
关键词：
Magnetoimpedance; Amorphous ribbon; Field annealing; Sensitivity; Magnetic sensor; GIANT MAGNETOIMPEDANCE; WIRES; MICROWIRES; ALLOYS; MAGNETOSTRICTION;
D O I：
10.1016/j.spmi.2016.05.028
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The roles of applied magnetic field during the current annealing of Co68.15Fe4.35Si12.5B15 soft magnetic amorphous ribbons are studied. Samples heat treated by Joule heating effect in open air and simultaneously in the present of longitudinal external magnetic field showed asymmetric magnetoimpedance (AMI) behavior. The AMI profile can be related to the exchange bias interaction between the soft magnetic amorphous material and a harder magnetic crystalline phase formed on the surface of the ribbon. This effect stems from thermal effect, the transverse Oe field generated from the annealing current which is thickness dependent and the longitudinal external field. The single peak AMI with the field sensitivity of 101%/Oe for DC annealing current is achieved. Our results could address a simple way to achieve the AMI response toward developing high sensitive magnetic field sensors. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：191 / 197
页数：7
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