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首页> 外文期刊>Physical review >Pressure effects on the magnetoelectric properties of a multiferroic triangular-lattice antiferromagnet CuCrCO_2
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Pressure effects on the magnetoelectric properties of a multiferroic triangular-lattice antiferromagnet CuCrCO_2

机译:压力对多铁三角晶格反铁磁体CuCrCO_2的磁电性能的影响

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摘要

Effects of high pressure exceeding 10 GPa on spin-driven ferroelectricity were investigated for a multiferroic, triangular-lattice antiferromagnet (TLA), CuCrCO_2. For this purpose, we developed a system which enables us to measure ferroelectric polarization under a pressure of 10 GPa by using a diamond anvil cell. We found that the magnetic transition temperature accompanying the ferroelectric one in CuCrCO_2 was remarkably enhanced by applying pressure. The result is simply explained by considering the pressure-induced enhancement of inter-and/or intralayer magnetic interaction due to the compression of the lattice. In addition, the coercive electric field for the polarization reversal was also increased with increasing pressure, while the amplitude of the ferroelectric polarization was steeply suppressed at around 8 GPa. A possible origin of the observed pressure effects on the ferroelectric property in the multiferroic TLA is discussed in terms of a ferroelectric-antiferroelectric transition and structural domain rearrangement by uniaxial stress.
机译:研究了多铁,三角形晶格反铁磁体(CuCrCO_2)中超过10 GPa的高压对自旋驱动铁电的影响。为此,我们开发了一种系统,该系统使我们能够使用金刚石砧盒在10 GPa的压力下测量铁电极化。我们发现,通过施加压力,CuCrCO_2中伴随铁电体的磁性转变温度显着提高。通过考虑由于晶格压缩导致的压力诱导的层间和/或层内磁相互作用的增强,可以简单地解释该结果。另外,用于极化反转的矫顽电场也随着压力的增加而增加,而铁电极化的幅度被陡峭地抑制在8GPa左右。讨论了在多铁性TLA中观察到的压力作用对铁电特性的可能起源,涉及铁电-反铁电转变和单轴应力引起的结构域重排。

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  • 来源
    《Physical review》 |2013年第9期|094401.1-094401.5|共5页
  • 作者单位

    Division of Material Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan;

    KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan;

    KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan;

    KYOKUGEN, Research Center for Materials Science at Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan;

    Division of Material Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan;

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

    pressure effects;

    机译:压力效应;

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