摘要
在流动气体中,用焦耳热退火方法研究了单辊快淬技术制得的Fe36Co36Nb4Si4.8B19.2非晶薄带经32A/mm2电流退火10 min的巨磁阻抗效应.结果表明:保护气体的流速对材料的巨磁阻抗曲线有明显的影响,当保护气体的流速为1.8 m/s时出现了尖刺巨磁阻抗现象,灵敏度达到了最大值5 538%/(A.m-1).
The GMI effect of Fe-36Co-36Nb-4Si-4.8B-19.2 amorphous ribbons which were produced in an air atmosphere by rapid quenching using a single roller technique was investigated.The ribbons were annealed by DC current for 10 min under the protection of air flow,and by Joule heating method.As a consequence,the influence of the velocity of air flow on the giant magneto-impedance curve was significant.The TGMI（Tip Giant Magneto-impedance） effect appeared,when the velocity of air flow came up to 1.8 m/s,meanwhile,the GMI sensitivity reached the maximum value as high as 5 538 %/（A5m＋-1）,which demonstrated a realistic significance for the fabrication of new magnetic materials with high sensitivity.
出处
《浙江师范大学学报（自然科学版）》
CAS
2010年第2期155-158,共4页
Journal of Zhejiang Normal University:Natural Sciences
基金
国家自然科学基金资助项目(50871104)
浙江省自然科学基金资助项目(Y4080324)
浙江省新苗人才计划项目(KYZ-KJY09099)
浙江省大学生科技创新项目(ZC316009004)
