Effect of chromium interlayer on magnetic exchange coupling of SmCo/Cr/TbFeCo multilayer thin films
来源期刊：JOURNAL OF RARE EARTHS2008年第3期
论文作者：CUI Zengli CHENG Weiming LAN Zhigao GUO Jihua YANG Xiaofei HUANG Zhixin ZHANG Feng
Key words：interlayer; exchange coupling; multilayer thin films; rare earths;
Abstract: A series of SmCo/Cr/TbFeCo multilayer thin films with perpendicular anisotropy were prepared by RF- magnetron sputtering system, and the effects of Cr interlayer thickness on magnetic properties and interlayer exchange coupling were investigated. It was found that the magnetic properties varied with the thickness of Cr interlayer, especially the values of saturation magnetization Ms and the coercivity Hc fluctuated periodically with the thickness of Cr interlayer. STM images revealed that the variation of coercivity Hc was attributed to the microstructure change of SmCo layer influenced by Cr interlayer, and the variation of Ms was related to interlayer exchange coupling.
CUI Zengli1，CHENG Weiming2，LAN Zhigao3，GUO Jihua1，YANG Xiaofei2，HUANG Zhixin1，ZHANG Feng1
(1.College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;
2.Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
3.College of Physical Science and Technology, Huanggang Normal University, Huanggang 438000, China)
Abstract:A series of SmCo/Cr/TbFeCo multilayer thin films with perpendicular anisotropy were prepared by RF- magnetron sputtering system, and the effects of Cr interlayer thickness on magnetic properties and interlayer exchange coupling were investigated. It was found that the magnetic properties varied with the thickness of Cr interlayer, especially the values of saturation magnetization Ms and the coercivity Hc fluctuated periodically with the thickness of Cr interlayer. STM images revealed that the variation of coercivity Hc was attributed to the microstructure change of SmCo layer influenced by Cr interlayer, and the variation of Ms was related to interlayer exchange coupling.
Key words:interlayer; exchange coupling; multilayer thin films; rare earths;
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