SmCo磁记录薄膜中磁耦合作用的研究  

Magnetic Exchange Coupling of SmCo Thin Films

作　　者：李帅[1] 冯春[1] 李宁[1] 李宝河[1] 于广华[1] 孙文星[2] 

机构地区：[1]北京科技大学材料物理与化学系,北京100083 [2]山东师范大学管理与经济学院,山东济南250014

出　　处：《中国稀土学报》2009年第6期807-811,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金项目(50871014)资助

摘　　要：采用磁控溅射方法,在玻璃基片上制备了Cr/SmCo/Cr结构的SmCo薄膜,实验结果表明:在低Sm含量(20.5%(原子分数))和高Sm含量(大于30.7%)的SmCo薄膜中都能形成SmCo5磁性相,在Sm含量较高的SmCo薄膜中同时还形成了SmCo2等非磁性相,非磁性相的存在对磁性相有隔离作用,从而降低了磁性晶粒之间的磁耦合作用。因此可以用提高Sm含量的方法来降低SmCo薄膜磁性晶粒之间的磁耦合作用。The Cr/SmCo/Cr thin films were prepared on glass substrates by magnetron sputtering.The results showed that the magnetic SmCo5 phase forms in samples with low Sm concentration（20.5%） and high Sm concentration（30.7%）.Whereas,nonmagnetic SmCo2 phase,which acted as an isolator of magnetic phases and lowered magnetic exchange coupling between SmCo magnetic grains,also formed in samples with high Sm concentration,therefore,it was feasible to decrease the magnetic exchange coupling of SmCo thin films by increasing the Sm concentration.

关 键 词：SmCo薄膜 磁记录 交换耦合 稀土 

分 类 号：O484.4[理学—固体物理]