Nucleus size and Zeldovich factor in two-dimensional nucleation at the Kossel crystal (001) surface
| Autor: | PJ Jansens, J.H. ter Horst |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
Surface (mathematics) Supersaturation Monte Carlo method Nucleation Surfaces and Interfaces Condensed Matter Physics Molecular physics Surfaces Coatings and Films law.invention Crystal medicine.anatomical_structure law Materials Chemistry medicine Statistical physics Crystallization Shape factor Nucleus |
| Zdroj: | Surface Science. 574:77-88 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2004.10.020 |
| Popis: | A Monte Carlo simulation method to determine the growth probability of two-dimensional clusters on the Kossel (0 0 1) surface is described. From this growth probability the nucleus size and the Zeldovich factor for two-dimensional nucleation were obtained. For low supersaturations the Gibbs–Thomson equation describes the supersaturation dependency of the nucleus size very well. At higher supersaturations a deviation from the predicted nucleus sizes is observed. This is mainly due to the size dependence of the apparent specific step free energy and/or the shape factor of the nucleus. A small systematic deviation between the theoretical and actual growth probability is observed and explained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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