Lacasta Palacio, Ana MaríaHernández Machado, AuroraSancho, José M.2009-10-302009-10-3019930163-1829https://hdl.handle.net/2445/9889Front and domain growth of a binary mixture in the presence of a gravitational field is studied. The interplay of bulk- and surface-diffusion mechanisms is analyzed. An equation for the evolution of interfaces is derived from a time-dependent Ginzburg-Landau equation with a concentration-dependent diffusion coefficient. Scaling arguments on this equation give the exponents of a power-law growth. Numerical integrations of the Ginzburg-Landau equation corroborate the theoretical analysis.10 p.application/pdfeng(c) The American Physical Society, 1993Transformacions de fase (Física estadística)DifusióFísica de l'estat sòlidPhase transformations (Statistical physics)Diffusioninfo:eu-repo/semantics/article82494info:eu-repo/semantics/openAccess