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Strong room-temperature ferromagnetism of high-quality lightly Mn-doped ZnO grown by molecular beam epitaxy

机译：分子束外延生长的优质轻锰掺杂ZnO的强室温铁磁性

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摘要

Strong room-temperature ferromagnetism is demonstrated in single crystalline Mn-doped ZnO grown by molecular beam epitaxy. With a low Mn concentration of 2×10~(19)cm~(-3), Mn-doped ZnO films exhibited room-temperature ferromagnetism with a coercivity field larger than 200 Oe, a large saturation moment of 6 μB/ion, and a large residue moment that is ～70% of the saturation magnetization. Isolated ions with long range carrier mediated spin-spin coupling may be responsible for the intrinsic ferromagnetism.
机译：通过分子束外延生长的单晶锰掺杂ZnO表现出强的室温铁磁性。 Mn掺杂的ZnO薄膜的Mn浓度低至2×10〜（19）cm〜（-3）时，表现出室温铁磁性，矫顽力场大于200 Oe，饱和磁矩大，为6μB/离子，并且残余磁矩大，约为饱和磁化强度的70％。具有长距离载流子介导的自旋-自旋耦合的离析离子可能是固有铁磁性的原因。

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  • 来源
    《Journal of Applied Physics》 |2012年第5期|p.053708.1-053708.6|共6页
  • 作者

    Zheng Zuo; Huimei Zhou; Mario J. Olmedo; Jieying Kong; Ward P. Beyermann; Jian-Guo Zheng; Yan Xin; Jianlin Liu;

  • 作者单位

    Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside,Riverside, California 92521, USA;

    Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside,Riverside, California 92521, USA;

    Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside,Riverside, California 92521, USA;

    Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside,Riverside, California 92521, USA;

    Department of Physics and Astronomy, University of California - Riverside, Riverside, California 92521, USA;

    Laboratory for Electron and X-ray Instrumentation, California Institute for Telecommunications and Information Technology, University of California - Irvine, Irvine, California 92697, USA;

    NHMFL, Florida State University, 1800E. Paul Dirac Dr., Tallahassee, Florida 32310-3706, USA;

    Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside,Riverside, California 92521, 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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