Recently developed Cs corrected HAADF and ABF STEM are applied to visualize a single atom in a crystal and to directly observe the light elements in a crystal. These results are quantitatively analyzed and interpreted by combining first principles calculations. It is demonstrated that HAADF-STEM enables us to directly observe single dopant in a crystal and the dopant distribution in Ce doped cubic boron nitride (CBN). It is also shown that ABF-STEM is very powerful to directly observe the light elements such as lithium and hydrogen atomic columns in the respective crystals.
|出版ステータス||Published - 2014 9月 1|
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