Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1449749 | Acta Materialia | 2007 | 11 Pages |
Abstract
A crystallographic orientation relationship (COR) of unusually high lattice mismatch (>15%) between an Al{1 0 0} substrate and its ultra-thin (<1 nm) oxide overgrowth is reported. This striking observation is in contrast with the general assumption that a COR with the lowest mismatch is preferred. However, as shown by thermodynamic model calculations, despite the relatively large energy contributions from residual strain and misfit dislocations, the high-mismatch overgrowth can be stabilized by a relatively low surface energy and a relatively high density of metal–oxygen bonds across the interface.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
F. Reichel, L.P.H. Jeurgens, G. Richter, P.A. van Aken, E.J. Mittemeijer,