SmCo/FeCo/SmCo三层膜中的剩磁增强效应  

Effect of remanence enhancement of SmCo/FeCo/SmCo trilayer films

作　　者：刘湘华[1] 严格 崔利亚 周少雄 王崇愚 郑鹉[2] 王艾玲[2] 陈金昌[2] 

机构地区：[1]北京钢铁研究总院国家非晶微晶合金工程技术研究中心,北京100081 [2]首都师范大学物理系,北京100037

出　　处：《功能材料》2002年第3期267-268,271,共3页Journal of Functional Materials

基　　金：国家科委九五科技攻关资助项目 (96 A0 9 0 1 0 6)

摘　　要：系统地研究了磁控溅射制备的Sm2 2 Co78/Fe65Co3 5/Sm2 2 Co78三层膜系统中 ,当软磁相的体积分数一定时 ,矫顽力和剩磁比随FeCo软磁层厚度 (d)的变化。所有样品的磁滞回线均为单一硬磁相特征 :说明FeCo软磁层与SmCo硬磁层之间的交换相互作用 ,使两相很好地复合在一起。当软磁相的体积分数为 15 %、2 0 %、3 0 %的情况下 ,矫顽力随d的变化都出现峰值 ;而剩磁比则单调增加。当体积分数为 5 0 %时 ,矫顽力随d的增加没有峰值 ,但剩磁比还是单调增加。随着软磁体积分数的增加 。The dependence of reduced ( M r/ M s) and coercivity of Sm 22 Co 78 /Fe 65 Co 35 /Sm 22 Co 78 triple layer films on Fe 65 Co 35 soft magnetic layer thickness, d , was systematically investigated. All the hysteresis loops of the films exhibit a single phase behavior, reflecting a strong exchange coupling between soft and hard magnetic phase. When volume of soft layer was 15%,20% and 30%, M r/ M s shows a monotonic increase with increasing the Fe 65 Co 35 thickness, d , and the coercivity exists a peak with increasing d . When the volume of soft layer was 50%, M r/ Ms increases with increasing the d , and the peak of coercivity disapear.

关 键 词：三层膜 矫顽力 剩磁比 剩磁增强 

分 类 号：TM27[一般工业技术—材料科学与工程]