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Influence of an Fe cap layer on the structural and magnetic properties of Fe49Pt51/Fe bi-layers

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【作者】 段朝阳； 马斌； 魏福林； 张宗芝； 金庆原；

【Author】 Duan Chao-Yang a), Ma Bin a), Wei Fu-Lin b), Zhang Zong-Zhi a), and Jin Qing-Yuan a) a)State Key Laboratory for Advanced Photonic Materials and Devices, and Department of Optical Science and Engineering, Fudan University,Shanghai 200433, China b)Research Institute of Magnetic Materials,Lanzhou University,Lanzhou 730000,China

【机构】 State Key Laboratory for Advanced Photonic Materials and Devices,and Department of Optical Science and Engineering,Fudan University； Research Institute of Magnetic Materials,Lanzhou University；

【摘要】 The influences of an Fe cap layer on the structural and magnetic properties of FePt/Fe bi-layers are investigated. Compared with single FePt alloy films, a thin Fe layer can affect the crystalline orientation and improve the chemical ordering of L10 FePt films. Moreover, the coercivity increases when a thin Fe layer covers the FePt layer.Beyond a critical thickness, however, the Fe cover layer quickens the magnetization reversal of Fe49Pt51/Fe bi-layers by their exchange coupling.

【Abstract】 The influences of an Fe cap layer on the structural and magnetic properties of FePt/Fe bi-layers are investigated. Compared with single FePt alloy films, a thin Fe layer can affect the crystalline orientation and improve the chemical ordering of L10 FePt films. Moreover, the coercivity increases when a thin Fe layer covers the FePt layer.Beyond a critical thickness, however, the Fe cover layer quickens the magnetization reversal of Fe49Pt51/Fe bi-layers by their exchange coupling.

【关键词】 Fe cap layer； L10 FePt； magnetism；
【Key words】 Fe cap layer； L10 FePt； magnetism；
【基金】 Project supported by the National Natural Science Foundation of China (Grant Nos 60490290,60678008 and 50771032);the National Basic Research Program of China (Grant No 2009CB929201);the Science Foundation of the Science and Technology Committee of Shanghai (Grant No 06DJ14007)
  • 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2009年06期
  • 【分类号】TB383.2
  • 【被引频次】2
  • 【下载频次】20
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