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首页> 外文期刊>Physical review >Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr_(0.8)Ca_(0.2)Mn_(1-y)Co_yO_3 thin films
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Spectroscopic studies on the electronic and magnetic states of Co-doped perovskite manganite Pr_(0.8)Ca_(0.2)Mn_(1-y)Co_yO_3 thin films

机译:钴掺杂钙钛矿锰铁Pr_(0.8)Ca_(0.2)Mn_(1-y)Co_yO_3薄膜的电子和磁性态的光谱学研究

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摘要

We have investigated the electronic and magnetic properties of Co-doped Pr_(0.8)Ca_(0.2)MnO_3 thin films using various spectroscopic techniques. X-ray absorption and hard x-ray photoemission spectroscopy revealed that the substituted Co ions are in the divalent state, resulting in hole doping on the Mn atoms. Studies of element-selective magnetic properties by x-ray magnetic circular dichroism found a large orbital magnetic moment for the Co ions. These spectroscopic studies reveal that the substituted Co ions play several roles of hole doping for Mn, ferromagnetic superexchange coupling between the Co~(2+) and Mn~(4+) ions, and orbital magnetism of the Co~(2+) ions. Competition among these complex interactions produces the unique electronic and magnetic behaviors including enhanced coercivity of the Co-doped Pr_(0.8)Ca_(0.2)MnO_3.
机译:我们已经使用各种光谱技术研究了共掺杂的Pr_(0.8)Ca_(0.2)MnO_3薄膜的电子和磁性。 X射线吸收和硬X射线光发射光谱表明,取代的Co离子处于二价状态,导致Mn原子上的空穴掺杂。通过X射线磁性圆二色性研究元素选择磁性能,发现Co离子具有很大的轨道磁矩。这些光谱研究表明,取代的Co离子在Mn的空穴掺杂,Co〜(2+)和Mn〜(4+)离子之间的铁磁超交换耦合以及Co〜(2+)离子的轨道磁性中起多种作用。 。这些复杂相互作用之间的竞争产生了独特的电子和磁行为,包括增强了Co掺杂的Pr_(0.8)Ca_(0.2)MnO_3的矫顽力。

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  • 来源
    《Physical review》 |2013年第17期|174423.1-174423.6|共6页
  • 作者单位

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Applied Physics and Quantum-Phase Electronic Center (QPEC), University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;

    Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan;

    Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

    Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan;

    JASRl/SPring-8, Mikazuki-cho, Hyogo 679-5198, Japan;

    JASRl/SPring-8, Mikazuki-cho, Hyogo 679-5198, Japan;

    Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba 305-0801, Japan,PRESTO, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan;

    Institute for Solid State Physics, University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan;

    Department of Applied Chemistry, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan,Synchrotron Radiation Research Organization, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan;

    Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    strongly correlated electron systems; heavy fermions; manganites; X-ray absorption spectra; photoemission and photoelectron spectra;

    机译:强相关电子系统;重费米子锰矿;X射线吸收光谱;光发射和光电子能谱;

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