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首页> 外文期刊>Physical review >Pressure-induced tuning of a magnetic phase separation in Nd_(0.53)Sr_(0.47)MnO_3
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Pressure-induced tuning of a magnetic phase separation in Nd_(0.53)Sr_(0.47)MnO_3

机译:Nd_(0.53)Sr_(0.47)MnO_3中磁相分离的压力诱导调谐

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摘要

X-ray magnetic circular dichroism and neutron diffraction measurements were conducted in situ at high pressure and low temperature to investigate the evolution of the magnetic properties of Nd_(0.53)Sr_(0.47)MnO_3 (NSMO47). The neutron diffraction data provide the experimental evidence for the presence of antiferromagnetic domains within the conducting ferromagnetic host at ambient pressure. The antiferromagnetic phase becomes dominant above 3 GPa with a concomitant reduction of the FM phase. Those findings indicate that the magnetic ground state of NSMO47 is more complex than previously reported, confirming the coexistence of competing phases over the doping range in which colossal magnetoresistance is observed. We also find that magnetic phase separation in the form of domains appears to be an intrinsic phenomenon at high pressure.
机译:在高压和低温下原位进行了X射线磁性圆二色性和中子衍射测量,以研究Nd_(0.53)Sr_(0.47)MnO_3(NSMO47)磁性的演变。中子衍射数据提供了在环境压力下导电铁磁主体内存在反铁磁畴的实验证据。反铁磁相在3 GPa以上占主导地位,同时FM相减少。这些发现表明,NSMO47的磁性基态比以前报道的要复杂,这证实了在观察到巨大磁阻的掺杂范围内竞争相的共存。我们还发现,磁畴形式的磁相分离似乎是高压下的固有现象。

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  • 来源
    《Physical review》 |2012年第9期|p.094407.1-094407.5|共5页
  • 作者单位

    HPSynC, Geophysical Laboratory, Carnegie Institution of Washington, 9700 S. Cass Avenue, Argonne, Illinois 60439, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA;

    Geological and Environmental Sciences, Stanford University, California 94025, USA;

    Geological and Environmental Sciences, Stanford University, California 94025, USA;

    Chemical and Engineering Materials Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831;

    Quantum Condensed Matter Division Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831;

    Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA;

    Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA;

    Geological and Environmental Sciences, Stanford University, California 94025, USA,Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, 94025 California, USA,Photon Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    manganites;

    机译:锰矿;

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