influence of modulated structure on magnetic properties of NdFeB/Co multilayer thin films
来源期刊：中南大学学报(英文版)2015年第9期
论文作者：Fu Yu-dong Wang Shi-yang Zhu Xiao-shuo Fang Bo Yan Feng
文章页码：3282 - 3286
Key words：NdFeB/Co film; modulated structure; perpendicular magnetic anisotropy; coercivity; reduced remanence
Abstract: The NdFeB/Co multilayer films were prepared by magnetron sputtering. After that, the samples were annealed at 600 °C for 20 min. The surface morphology, phase structures and magnetic properties of Mo (50 nm)/[NdFeB (100 nm)/Co(y)]×10/Mo (50 nm) thin films were researched by AFM, XRD and VSM, respectively. The results show that the films show stronger perpendicular magnetic anisotropy. When the thickness of Co layers is 10 nm, the coercivity Hc⊥ is the maximum, 295 kA/m. However, for y=10-20, the reduced remanence M/Ms of films has increased. When the thickness of Co layers is 20-30 nm, the NdFeB/Co multilayer films obtained more superior magnetic properties with M/Ms =0.95.
Fu Yu-dong(傅宇东), Wang Shi-yang(王诗阳), Zhu Xiao-shuo(朱小硕), Fang Bo(方博), Yan Feng(闫峰)
(College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China)
Abstract:The NdFeB/Co multilayer films were prepared by magnetron sputtering. After that, the samples were annealed at 600 °C for 20 min. The surface morphology, phase structures and magnetic properties of Mo (50 nm)/[NdFeB (100 nm)/Co(y)]×10/Mo (50 nm) thin films were researched by AFM, XRD and VSM, respectively. The results show that the films show stronger perpendicular magnetic anisotropy. When the thickness of Co layers is 10 nm, the coercivity Hc⊥ is the maximum, 295 kA/m. However, for y=10-20, the reduced remanence M/Ms of films has increased. When the thickness of Co layers is 20-30 nm, the NdFeB/Co multilayer films obtained more superior magnetic properties with M/Ms =0.95.
Key words:NdFeB/Co film; modulated structure; perpendicular magnetic anisotropy; coercivity; reduced remanence
