CoPt和CoPt/Ag合金薄膜的结构和磁性能  

Structures and Magnetic Properties of CoPt and CoPt/Ag Thin Films

作　　者：杨治广[1] 许小红[1] 武海顺[1] 

机构地区：[1]山西师范大学,山西临汾041004

出　　处：《稀有金属材料与工程》2005年第11期1713-1716,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目;山西省自然科学基金项目(20041032)联合资助

摘　　要：用磁控溅射法在玻璃基片上制备了具有等原子比组成的不同厚度的CoPt薄膜及不同Ag底层厚度的CoPt/Ag薄膜。真空退火后的结果表明,膜厚对CoPt薄膜的微观结构和磁性能有着重要的影响,膜厚较薄时(δ≤15nm)有利于易磁化轴(c轴)垂直于膜面取向,从而具有高的垂直磁各向异性;Ag底层可以诱导L10-CoPt相的形成并使c轴垂直择优取向,且Ag底层越厚其诱导效应越强。CoPt thin films with different thickness or different Ag under layer thickness were prepared by RF magnetron sputtering technique, then it was vacuum annealed. The magnetic properties and structures of the thin films were studied by XRD, XP-2 films detector, VSM . The results show that the （001） texturing has been achieved at lower thickness （δ≤15 nm）, and their perpendicular coercivities were higher than in-plane ones. Then the （001） texturing deteriorates rapidly above 20 nm. L10-CoPt phase was easily obtained by introducing Ag under layers, and the （001） orientation can benefit from thick Ag under layer.

关 键 词：CoPt薄膜 厚度 Ag底层 结构 磁性能 

分 类 号：TB43[一般工业技术]