Direct imaging of lithium atoms in LiV2O4 by spherical aberration-corrected electron microscopy

Oshima Yoshifumi<sup>*</sup>; Sawada Hidetaka; Hosokawa Fumio; Okunishi Eiji; Kaneyama Toshikatsu; Kondo Yukihito; Niitaka Seiji; Takagi Hidenori; Tanishiro Yasumasa; Takayanagi Kunio

doi:10.1093/jmicro/dfq017

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Direct imaging of lithium atoms in LiV2O4 by spherical aberration-corrected electron microscopy

作者：Oshima Yoshifumi^*; Sawada Hidetaka; Hosokawa Fumio; Okunishi Eiji; Kaneyama Toshikatsu; Kondo Yukihito; Niitaka Seiji; Takagi Hidenori; Tanishiro Yasumasa; Takayanagi Kunio

来源：Journal of Electron Microscopy, 2010, 59(6): 457-461.

DOI：10.1093/jmicro/dfq017

摘要

We visualized lithium atom columns in LiV2O4 crystals by combining scanning transmission electron microscopy with annular bright field (ABF) imaging using a spherical aberration-corrected electron microscope (R005) viewed from the [110] direction. The incident electron beam was coherent with a convergent angle of 30 mrad (semi-angle), and the detector collected scattered electrons over 20-30 mrad (semi-angle). The ABF image showed dark dots corresponding to lithium, vanadium and oxygen columns.