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Structural and magnetic properties of Pt in Co/Pt multilayers

机译：Co / Pt多层膜中Pt的结构和磁性

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摘要

[Co(30 A)/Pt(x A)]_(20) multilayers with the Pt layer thicknesses varying from 5 A to 20 A were characterized structurally by high angle X-ray diffraction, X-ray reflectivity, X-ray absorption spectroscopy and magnetically by X-ray magnetic circular dichroism. It is found that the structure and magnetic properties of Pt have a strong correlation with the Pt layer thickness. The 20 A thickness Pt layer is not almost influenced by the adjacent Co layer and the nearest neighbors are dominated by Pt-Pt shells. With decreasing Pt layer thickness, the nearest neighbors are gradually dominated by Pt-Co shells and the Pt-Co intermixing regions also remarkable increase at the interfaces, especially for the 5 A thickness Pt layer. The orbital and spin magnetic moments as well as the ratio m_(orb)/M_(spin) all decrease systematically with increasing Pt layer thickness, indicating that the interface atoms are polarized by direct Pt-Co hybridization, but that the adjacent layers are polarized by Pt-Pt interactions.
机译：[Co（30 A）/ Pt（x A）] _（20）层的Pt层厚度在5 A至20 A之间变化，通过高角度X射线衍射，X射线反射率，X射线吸收来表征结构光谱学和磁性通过X射线磁性圆二色性。发现Pt的结构和磁性与Pt层的厚度有很强的相关性。厚度为20 A的Pt层几乎不受相邻的Co层的影响，最近的相邻层受Pt-Pt壳的控制。随着Pt层厚度的减小，最近的邻居逐渐被Pt-Co壳占据，并且Pt-Co混合区域在界面处也显着增加，特别是对于5 A厚度的Pt层。随着Pt层厚度的增加，轨道磁矩和自旋磁矩以及m_（orb）/ M_（spin）之比都系统地减小，这表明界面原子通过直接的Pt-Co杂交而极化，但是相邻层被极化了。通过Pt-Pt相互作用。

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  • 来源
    《Applied Surface Science》 |2011年第17期|p.7427-7431|共5页
  • 作者

    Yukai An; Lingshen Duan; Tao Liu; Zhonghuan Wu; Jiwen Liu;

  • 作者单位

    Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education:Tianjin, China,Key Laboratory for Photoelectric Materials and Devices:School of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;

    Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education:Tianjin, China,Key Laboratory for Photoelectric Materials and Devices:School of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;

    Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;

    Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;

    Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education:Tianjin, China,Key Laboratory for Photoelectric Materials and Devices:School of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    co/pt multilayers; structural; magnetic properties;

    机译：co / pt多层;结构磁性;

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