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Detecting the direction of oxygen bonding in SrTiO_3

机译:检测SrTiO_3中氧键的方向

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摘要

The near-edge fine structure of an ionization edge in electron energy-loss spectroscopy provides bonding and elemental information. We investigate the fine structure of the O K edge in SrTiO_3, where the oxygen atoms have identical local bonding environments in three dimensions but differ in their two-dimensional projection. By removing the effects of elastic and thermal diffuse scattering in experimental data, we demonstrate a small difference between the O columns that are nonequivalent in projection, which was not evident before the removal of scattering of the probing electrons. We explore the robustness of this method to the uncertainty in various experimental parameters.
机译:电子能量损失谱中电离边缘的近边缘精细结构可提供键合和元素信息。我们研究了SrTiO_3中O K边缘的精细结构,其中氧原子在三个维度上具有相同的局部键合环境,但在二维投影上有所不同。通过消除实验数据中的弹性和热扩散散射的影响,我们证明了在投影中不等价的O列之间的微小差异,这在消除探测电子的散射之前是不明显的。我们探索该方法对各种实验参数不确定性的鲁棒性。

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  • 来源
    《Physical review》 |2013年第11期|115120.1-115120.14|共14页
  • 作者单位

    School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia;

    School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia;

    School of Physics, Monash University, Clayton, Victoria 3800, Australia;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Institute for Chemical Research, Kyoto University, Kyoto 611-0011, Japan;

    National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan;

    School of Physics, University of Melbourne, Parkville, Victoria 3010, Australia;

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

    electron energy loss spectroscopy;

    机译:电子能量损失谱;

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