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Journal of Electron Microscopy
Year: 2010  |  Volume: 59  |  Issue: 6  |  Page No.: 457 - 461

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

Y Oshima, H Sawada, F Hosokawa, E Okunishi, T Kaneyama, Y Kondo, S Niitaka, H Takagi, Y Tanishiro and K. Takayanagi    

Abstract:

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.

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