Abstract

The kinetics of domain growth during the process of spinodal decomposition in a thermally isolated system has been studied numerically by means of a Monte Carlo simulation and found to deviate significantly with respect to that under isothermal conditions. The excess configutational energy, released after the quench, transforms into enhanced phonon vibrations whereby the resulting rise of temperature in the system affects both the initial and late stages of growth. While at early times the adiabatical systems develops more rapidly than the isothermal one, in the asymptotic time limit we find ann≽1/4 power law of growth, i.e. a slow-down of the process as compared to the classicaln=1/3 result of Lifshitz and Slyozov. Dynamic scaling is found to hold under adiabatic conditions too.

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