Domain growth in binary mixtures at low temperatures
We have studied domain growth during spinodal decomposition at low temperatures. We have performed a numerical integration of the deterministic time-dependent Ginzburg-Landau equation with a variable, concentration-dependent diffusion coefficient. The form of the pair-correlation function and the st...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1992 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/16033 |
| Acceso en línea: | https://hdl.handle.net/2117/16033 |
| Access Level: | acceso abierto |
| Palabra clave: | Domain structure Nonlinear theories Dynamics Low temperatures Nonlinear dynamics Phase separation Domain growth Fluctuacions (Física) Teories no-lineals Temperatures baixes Àrees temàtiques de la UPC::Física |
| Sumario: | We have studied domain growth during spinodal decomposition at low temperatures. We have performed a numerical integration of the deterministic time-dependent Ginzburg-Landau equation with a variable, concentration-dependent diffusion coefficient. The form of the pair-correlation function and the structure function are independent of temperature but the dynamics is slower at low temperature. A crossover between interfacial diffusion and bulk diffusion mechanisms is observed in the behavior of the characteristic domain size. This effect is explained theoretically in terms of an equation of motion for the interface |
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