Abstract

AbstractEnergy (E), enthalpy (ΔHa), entropy (ΔSa) and free‐energy (ΔGa) of activation and the pre‐exponential factor (k0) of the ordinary Arrhenius equation kDl = k0e–E/RT were estimated for diffusion‐controlled crystal growth of SrWO4 from Na2WO4 melts. E increased slightly with increased cooling rates (RT). k0 was parallel to kDl and increased with increasing RT. ΔHa, ΔSa, and ΔGa did not change with the changes in RT and crystallization temperature (T0). The distance (d12), between a diffusing particle and its host necessary for a successful diffusion, was estimated. Such distances slightly increased with T0 and RT.

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