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Multiferroic nanoregions and a memory effect in cupric oxide

机译:多铁性纳米区域及其在氧化铜中的记忆效应

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摘要

We report the observation of multiferroic nanoregions in cupric oxide, CuO, by means of resonant soft x-ray magnetic scattering. There exists an anomalous memory effect for the direction of the electric polarization in the commensurate-incommensurate magnetic transition that coincides with the ferroelectric transition. Scattering results, incorporated with simulations of diffuse scattering, lead us to propose a scenario that preserved spin handedness in the multiferroic nanoregions is responsible for this memory effect in the magnetically induced ferroelectric properties of CuO.
机译:我们通过共振软X射线磁散射报告了氧化铜CuO中多铁性纳米区域的观察。在与铁电转变相一致的同等不等的磁跃迁中,存在着极化方向的异常记忆效应。散射结果与漫射散射的模拟相结合,使我们提出了一种方案,该方案在多铁性纳米区域中保留了自旋性,这是CuO的磁感应铁电性质中这种记忆效应的原因。

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  • 来源
    《Physical review》 |2010年第17期|P.172409.1-172409.4|共4页
  • 作者单位

    National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan;

    rnNational Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan;

    rnNational Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan;

    rnDepartment of Electrophysics, National Chiao-Tung University, Hsinchu 30010, Taiwan National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan;

    rnDivision of Materials Physics, Graduate School of Engineering and Science, Osaka University, Osaka 560-8531, Japan;

    rnDivision of Materials Physics, Graduate School of Engineering and Science, Osaka University, Osaka 560-8531, Japan;

    rnNational Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan;

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  • 正文语种 eng
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  • 关键词

    metal-insulator transitions and other electronic transitions; X-ray scattering;

    机译:金属-绝缘体过渡和其他电子过渡;X射线散射;

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