...
首页> 外文期刊>Physical review >Direct evidence of polar nature of ferroelastic twin boundaries in CaTiO_3 obtained by second harmonic generation microscope
【24h】

Direct evidence of polar nature of ferroelastic twin boundaries in CaTiO_3 obtained by second harmonic generation microscope

机译:通过二次谐波显微镜获得的CaTiO_3中铁弹性双晶界的极性的直接证据

获取原文
获取原文并翻译 | 示例
           

摘要

The polar nature of twin boundaries (TBs) of inherently nonpolar ferroelastic CaTiO_3 is examined by the confocal second harmonic generation (SHG) microscope. Three-dimensional SHG images of samples with the pseudocubic (110) and (1-11) planes confirm that both crystallographically prominent TB (W plane) and nonprominent TB (W plane) are SHG active and consequently polar. The directions of the electric polarization P_s are determined from the anisotropy of SHG intensities. In the W plane, the SHG polar diagrams are well fitted using the point-group symmetry 2, which reveals that the P_s directions parallel to the twofold axis do not lie in the W plane but are tilted from it. In the W plane, the P_s direction lies in the mirror plane of the point-group symmetry m.
机译:共聚焦二次谐波(SHG)显微镜检查了固有的非极性铁弹性CaTiO_3的孪生边界(TBs)的极性性质。具有伪立方(110)和(1-11)平面的样品的三维SHG图像证实,晶体学上突出的TB(W平面)和非突出的TB(W平面)都具有SHG活性,因此是极性的。根据SHG强度的各向异性来确定极化方向P_s。在W平面中,SHG极坐标图使用点组对称性2很好地拟合,这表明平行于双向轴的P_s方向不在W平面中,而是从W平面倾斜。在W平面中,P_s方向位于点组对称m的镜像平面中。

著录项

  • 来源
    《Physical review》 |2014年第14期|144109.1-144109.9|共9页
  • 作者单位

    Department of Physics, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan;

    Department of Physics, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, Chiba 263-8522, Japan;

    Institut de Chimie Moleculaire et Materiaux d'Orsay, Universite Paris Sud, 91405 Orsay Cedex, France,Laboratoire SPMS, Ecole Centrale Paris, Grande voie des vignes, Chatenay-Malabry, France;

    Institut de Chimie Moleculaire et Materiaux d'Orsay, Universite Paris Sud, 91405 Orsay Cedex, France;

    Quantitative Biology Center, RIKEN, 6-2-3 Furuedai, Suita, Osaka 565-0874, Japan;

    Department of Earth Sciences, Cambridge University, Downing Street, Cambridge CB2 3EQ, United Kingdom;

    Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;

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

    domain structure; hysteresis; ferroelectricity and antiferroelectricity; frequency conversion; harmonic generation, including higher-order harmonic generation;

    机译:域结构;磁滞铁电和反铁电变频;谐波产生;包括高次谐波产生;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号