NiFeSiMnMo/Cu/NiFeSiMnMo多层膜中Cu层对巨磁阻抗效应的影响  

Effects of Cu Layer on Giant Magnetoimpedance in Multilayered Films

作　　者：孙智勇[1] 赵志明[2] 季勇[3] 郑鹉[3] 王艾玲[3] 姜宏伟[3] 

机构地区：[1]西安工业大学数理系,西安710032 [2]西安理工大学材料学院,西安710048 [3]首都师范大学物理系,北京100037

出　　处：《金属功能材料》2008年第5期4-7,共4页Metallic Functional Materials

基　　金：国家自然科学基金项目(批准号:50071038);北京市教委基金资助的课题

摘　　要：在康宁玻璃上用真空蒸镀法沉积NiFeSiMnMo单层膜、NiFeSiMnMo/Cu双层膜和NiFeSiMnMo/Cu/Ni-FeSiMnMo多层膜。对单层膜和双层膜的软磁性能进行了分析,对多层膜的巨磁阻抗效应随Cu层宽度的变化进行了研究。实验研究表明,NiFeSiMoMn/Cu双层膜比NiFeSiMnMo单层膜矫顽力小、饱和磁化强度高;多层膜Ni-FeSiMnMo/Cu/NiFeSiMnMo随着Cu层宽度的增加巨磁阻抗比上升到一个最大值后下降,在磁性层宽度3mm的情况下,Cu层宽度在0.7mm时,巨磁阻抗比最大。NiFeSiMnMo film, NiFeSiMnMo/Cu double films and NiFeSiMnMo/Cu/ NiFeSiMnMo multilayer films were prepared on the suhstrate of coming glass by evaporating. The soft magnetic properties of NiFeSiMnMo and NiFeSiMnMo/Cu was studied,giant magnetoimpedance （GMI） effect was investigated on multilayered NiFeS- iMnMo/Cu/ NiFeSiMnMo with different width of Cu layer. Experimental results show that, NiFeSiMoMn/Cu have higher permeability and lower coercive force than NiFeSiMoMn,the GMI ratio of the multilayered films is correlated to width of Cu layer, the maximum longitudinal and transversal GMI ratio of 2. 7 % and 2. 24 % can be obtained respectively for a Cu layer width of 0.7mm and a frequency of about 4MHz.

关 键 词：巨磁阻抗 坡莫合金 多层膜 

分 类 号：O484.43[理学—固体物理]