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Probing the atomic arrangement of honeycomb layered oxides via optimum bright-field scanning transmission electron
Titus Masese1, Godwill Mbiti Kanyolo1, Yoshinobu Miyazaki2
1Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan. titus.masese@aist.go.jp.
Abstract:
Here, we employ low-dose atomic resolution optimum bright-field (OBF) scanning TEM (STEM) to maximise the signal-to-noise ratio, enabling the probing of the arrangement of atoms in honeycomb-layered Na2Zn2TeO6 (precursor). This successful application of OBF-STEM facilitates the characterisation of local atomic structures in electron-beam-sensitive honeycomb-layered materials, thereby pushing the frontier of such observation techniques towards investigating a postulate linking the hexagonal lattice of such precursors to precluded silver bilayered structures upon topotactic ion exchange reaction with molten Ag salt.
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