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首页> 外文期刊>Journal of Applied Physics >Structural and magnetic properties of a core-shell type L1-0 FePt/Fe exchange coupled nanocomposite with tilted easy axis
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Structural and magnetic properties of a core-shell type L1-0 FePt/Fe exchange coupled nanocomposite with tilted easy axis

机译：具有易轴倾斜的核壳型L1-0 FePt / Fe交换耦合纳米复合材料的结构和磁性

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摘要

Structural and magnetic properties of core-shell type L1-0 FePt/Fe exchange coupled nanocomposites are studied systematically. Core-shell nanocomposites with FePt core and Fe shell are obtained by depositing Fe cap layers on granular L1-0 FePt films. Epitaxial growth is disclosed by x-ray diffraction. Coercivity decreases drastically for FePt/Fe with the thickness increase of Fe cap layers. The coercivity reduction is due to the much increased domain wall area pinned and compressed at the soft-hard interface, and the tilted effective easy axis because of the presence of demagnetized energy. L1-0 FePt/Fe with a 3 nm Fe layer has high thermal stability and gain factor for media applications.
机译：系统研究了核-壳型L1-0 FePt / Fe交换偶联纳米复合材料的结构和磁性。通过在颗粒状的L1-0 FePt薄膜上沉积Fe盖层，可以获得具有FePt核和Fe壳的核-壳纳米复合材料。通过X射线衍射公开了外延生长。 FePt / Fe的矫顽力随Fe盖层厚度的增加而急剧下降。矫顽力的降低是由于软硬界面处钉扎和压缩的畴壁面积大大增加，以及由于存在退磁能量而使有效易轴倾斜。具有3 nm Fe层的L1-0 FePt / Fe具有很高的热稳定性和介质应用的增益系数。

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  • 来源
    《Journal of Applied Physics》 |2011年第1期|p.109.083907.1-109.083907.7|共7页
  • 作者

    Bin Ma; Hao Wang; Haibao Zhao; Chengjun Sun; Ramamurthy Acharya; Jian-Ping Wang;

  • 作者单位

    The Center for Micromagnetics and Information Technologies (MINT) and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA,Department of Optical Science and Engineering, Fudan University, Shanghai,People's Republic of China;

    The Center for Micromagnetics and Information Technologies (MINT) and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA;

    The Center for Micromagnetics and Information Technologies (MINT) and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA;

    Western Digital Media Inc., San Jose, California 95131, USA;

    Western Digital Media Inc., San Jose, California 95131, USA;

    The Center for Micromagnetics and Information Technologies (MINT) and Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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