Abstract
Abstract A description of the time evolution of a system undergoing spinodal decomposition, which includes long-time coarsening processes, is given by means of a simple phenomenological theory. A multiple timescale expansion of the basic phenomenological equations is used to obtain a hierarchy which describes a sequential formation of the new equilibrium phases. The first equation of the hierarchy is solved by ansatz and the solution shown to be capable of displaying a linear growth behaviour followed by a limiting, coarsening process. By choosing a particular, plausible initial state the solution is evaluated explicitly and shows good qualitative agreement with published experimental data.
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