Self-assembled superlattice by spinodal decomposition during growth
We examine the dynamics of alloy growth by vapor deposition and bulk diffusion, predicting a new type of self-organized growth. When material is deposited at a composition unstable against spinodal decomposition, we find three distinct regimes depending on growth rate. Intermediate growth rates lead...
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| Published in | Physical review letters Vol. 95; no. 7; p. 076102 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
12.08.2005
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| Online Access | Get more information |
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| Summary: | We examine the dynamics of alloy growth by vapor deposition and bulk diffusion, predicting a new type of self-organized growth. When material is deposited at a composition unstable against spinodal decomposition, we find three distinct regimes depending on growth rate. Intermediate growth rates lead to spontaneous formation of a superlattice with layers parallel to the surface. Slow growth leads to more complex three-dimensional decomposition. For fast growth, the alloy composition remains uniform near the surface, with a composition wave propagating up from the interface. |
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| ISSN: | 0031-9007 |
| DOI: | 10.1103/PhysRevLett.95.076102 |