华东师范大学学报(自然科学版) ›› 2008, Vol. 2008 ›› Issue (3): 120-124.

• 物理学 电子科学与技术 • 上一篇    

电流退火对钴基非晶丝巨磁阻抗效应的影响

袁 立, 杨燮龙, 赵振杰   

  1. 华东师范大学 物理系, 上海 200062
  • 收稿日期:2007-09-29 修回日期:2008-01-22 出版日期:2008-05-25 发布日期:2008-05-25
  • 通讯作者: 赵振杰

Influence of Joule annealing on GMI effect for Co-based amorphous microwires(Chinese)

YUAN Li, YANG Xie-long, ZHAO Zhen-jie   

  1. Department of Physics，East China Normal University，Shanghai 200062, China
  • Received:2007-09-29 Revised:2008-01-22 Online:2008-05-25 Published:2008-05-25
  • Contact: ZHAO Zhen-jie

PDF

580

摘要：

对直径为40 μm,长为5 cm的褪膜玻璃包裹钴基（Co69.20Fe4.16 Si12.35B10.77 Cr3.42 Mo0.1）非晶丝进行电流退火和电流应力退火，研究了退火对巨磁阻抗效应的影响.结果发现，随着退火电流密度和外加应力的增大，丝的磁阻抗变化对外加磁场的敏感度先增大后减小，在20 A/mm2和90 MPa的退火条件下，灵敏度最高，可达1%/( A·m-1).以上述条件退火，敏感度最高可达19%/( A·m-1).

关键词: 钴基非晶丝, 电流退火, 电流应力退火, 巨磁阻抗效应, 钴基非晶丝, 电流退火, 电流应力退火, 巨磁阻抗效应

Abstract:

Co-based（Co69.20Fe4.16 Si12.35B10.77 Cr3.42 Mo0.1） amorphous microwires with 40 μm in diameter and 5 cm in length，were annealed by Joule current and by stress Joule annealing. The relationship between giant magneto-impedance effect and the density of annealing current and the intensity of stress was investigated. The results showde that the GMI ratios firstly increase then decrease with the increase of the density of current and the intensity of the stress. The maximum of sensitivity of GMI ratios to applied field is 1%/( A·m-1) at 20 A/mm2 and 90 MPa.The sensitivity of wires which were annealed with these conditions can be 19%/(A·m-1).

Key words: current annealing, stress annealing, GMI effect, amorphous microwires, current annealing, stress annealing, GMI effect

中图分类号: