Direct Determination of Grain Boundary Atomic Structure in SrTiO 3
- 7 October 1994
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 266 (5182) , 102-104
- https://doi.org/10.1126/science.266.5182.102
Abstract
An atomic structure model for a 25° [001] symmetric tilt grain boundary in SrTiO3 has been determined directly from experimental data with the use of high-resolution Z-contrast imaging coupled with electron energy loss spectroscopy. The derived model of the grain boundary was refined by bond-valence sum calculations and reveals candidate sites for dopant atoms in the boundary plane. These results show how the combined techniques can be used to deduce the atomic structure of defects and interfaces without recourse to preconceived structural models or image simulations.Keywords
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