铁基多层膜连接等效成LC并联电路的巨磁阻抗效应  

Giant Magneto-Impedance Effect of Equivalent LC Parallel Circuit of Fe-Based Multilayered Films

作　　者：王宗篪[1] 黄丽斌[1] 

机构地区：[1]三明学院物理与机电工程系,福建三明365004

出　　处：《漳州师范学院学报（自然科学版）》2012年第2期53-56,共4页Journal of ZhangZhou Teachers College（Natural Science)

基　　金：福建省教育厅科技项目(JK2010060);三明学院大学物理教学团队建设项目(ZL0703/JT)

摘　　要：采用特定的接法使Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9多层膜连接等效成LC并联回路的样品.测量了样品的谐振频率和阻抗随外磁场变化的曲线,分析了外磁场引起样品谐振频率改变的原因,研究了样品谐振时的巨磁阻抗效应,得到了样品在固有频率的交变电流驱动下阻抗变化率最大的结果,说明了样品的巨磁阻抗效应有很好的频率选择性.In this study, the sample of equivalent LC parallel circuit was composed of Fe-based multilayered films, the field dependence of resonance frequency and impedance were measured in the sample, respectively, the reason of magnetic frequency shift was analyzed, the giant magneto-impedance in the resonant state of sample was investigated, and the maximum impedance ratio in the inherent resonant state of sample was obtained from experimental data, indicating a distinctive frequency selectivity of the sample＇s giant magneto-impedance effect.

关 键 词：铁基多层膜 LC并联电路谐振 巨磁阻抗效应 磁致频移 

分 类 号：O441[理学—电磁学]