Structural and Magnetic Properties of [Fe/Ni]N Multilayers  

作　　者：唐佳 马斌 张宗芝 金庆原 

机构地区：[1]Key Lab of Advanced Photonic Materials and Devices, Laboratory of Advanced Materials and Department of Optical Science and Engineering, Fudan University, Shanghai 200433

出　　处：《Chinese Physics Letters》2010年第7期256-259,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 60490290, 60678008, 10604016, 50771032 and 50771033, the National Basic Research Program of China （2009CB929201）. We-thank Professor Wang Jian-Ping for constructive discussion. The Characterization Facility and Institute of Rock Magnetism Facilities are acknowledged for structural and magnetic measurements.

摘　　要：[Fe/Ni]N multilayered structure grows epitaxially on the single crystalline MgO substrate. Due to the different directions of magnetic easy axes of Fe and Ni and the strong strain, large anisotropy dispersion is assumed. According to the layer model, the magnetization of Fe and Ni layers cannot follow each easy axis because of exchange coupling, and then the anisotropies are averaged out. The reduction of the effective anisotropy enhances with the decrease of periodic thickness. Thus, the coercivity of [Fe/Ni]N multilayers reduces with decreasing periodic thickness.[Fe/Ni]N multilayered structure grows epitaxially on the single crystalline MgO substrate. Due to the different directions of magnetic easy axes of Fe and Ni and the strong strain, large anisotropy dispersion is assumed. According to the layer model, the magnetization of Fe and Ni layers cannot follow each easy axis because of exchange coupling, and then the anisotropies are averaged out. The reduction of the effective anisotropy enhances with the decrease of periodic thickness. Thus, the coercivity of [Fe/Ni]N multilayers reduces with decreasing periodic thickness.

分 类 号：O484.43[理学—固体物理] TK406[理学—物理]