Comment on "2D atomic mapping of oxidation states in transition metal oxides by scanning transmission electron microscopy and electron energy-loss spectroscopy".
Comment on "2D atomic mapping of oxidation states in transition metal oxides by scanning transmission electron microscopy and electron energy-loss spectroscopy".
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DOI：
10.1103/physrevlett.108.259701
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发表时间：
2011-09
影响因子：
8.6
通讯作者：
E. A. Ahmad;G. Mallia;D. Kramer;V. Tileli;A. Kucernak;N. Harrison
中科院分区：
文献类型：
--
作者：
E. A. Ahmad;G. Mallia;D. Kramer;V. Tileli;A. Kucernak;N. Harrison
Using a combination of HAADF-STEM imaging and atomically resolved EELS in an aberration-corrected TEM we demonstrate the possibility of 2D atom by atom valence mapping in the mixed valence compound . The ELNES from and cation sites are similar to those of and references. Comparison with simulations shows that even though a local interpretation is valid here, intermixing of the inelastic signal plays a significant role. This type of experiments should be applicable to challenging topics in materials science, like the investigation of charge ordering or single atom column oxidation states in e.g. dislocations.
