驱动频率对FeCo基磁环巨磁阻抗效应的影响  

Influence of driving frequency on GMI of FeCo-based alloy magnetic ring

作　　者：叶慧群[1] 吕葆华[2] 郑金菊[1] 叶方敏[1] 蔡晶[1] 方允樟[1] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004 [2]金华市科技情报研究所,浙江金华321000

出　　处：《浙江师范大学学报（自然科学版）》2010年第4期423-426,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)

摘　　要：利用Fe36Co36Nb4Si4.8B19.2(FeCo基)磁环样品,在不同电流驱动频率下进行了环向驱动巨磁阻抗效应(环向外磁场作用下)的研究.发现最佳巨磁阻抗比基本上在驱动频率为200 kHz附近出现,最大阻抗比峰值达到了286%.分析认为是样品材料磁结构的分层分布造成的.The circular GMI effect of magnetic ring of FeCo-based alloy with being effected by circular magnetic field was investigated.The results showed that variations of GMI ratio were sensible to the outer circular magnetic field,when the driven frequency got to 200 kHz,the GMI ratio curves were linear to the value of circular magnetic field near zero magnetic field,and the GMI ratio reached its maximum rate 286%.

关 键 词：非晶合金 磁环 巨磁阻抗效应 驱动频率 

分 类 号：O482.5[理学—固体物理]