Abstract

Abstract The size of the critical nucleus serves as a benchmark in the nucleation theories. But its thermodynamic calculation requires knowledge of the interface free energy, which is size-dependent. A theoretical approach avoiding the need of interfacial energy data for evaluating the size of the critical nucleus is described in this paper. The point at which the volume term of the free energy change during new-phase nucleation balances the surface term is used. The size of the new-born crystals that survive up to this point (denominated ‘stable nuclei’) enables evaluation of the critical nucleus size.

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