Determination of Atomic Positions in a Solid Xe Precipitate Embedded in an Al Matrix
- 12 April 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 82 (15) , 3082-3084
- https://doi.org/10.1103/physrevlett.82.3082
Abstract
The atomic structure of precipitates embedded in crystalline membranes was observed for the first time by high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) with an electron probe in an atomic dimension. The experimental image was analyzed by taking a line profile and was compared with the calculated intensities obtained from the multislice based HAADF-STEM simulation. A model shifting Xe atoms slightly from the on-site of the Al matrix in the [100] direction agreed well with the experimental profile and image. From these results, the small displacement of Xe atoms to the Al matrix is estimated at about 0.5 Å.Keywords
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