Abstract
The effect of the electric field strength on nucleation and growth of the crystals of ammonium halides and alkali metal sulfates has been studied. The optimal electric field strength for NH4Cl and NH4Br crystals was found to be 15 kV/cm, and for NH4I, it equaled 10 kV/cm. No effect of the electric field strength on the crystal growth was found for alkali metal sulfates. This difference is analyzed in terms of the crystal growth thermodynamics. In case, when the electric field is small and the Gibbs energy is of a significant value, the influence of the electric field at the crystal growth is negligible. A method to estimate the critical radius of homogeneous nucleation of the crystal is suggested.
Highlights
The effect of electric, magnetic and other fields on nucleation and growth of various crystals has been studied since 50-ies of the last century
The quantitative theory of these effects has not been worked out. This is primarily due to the lack of a rigorous theory of homogeneous nucleation
The formation of small particles of a new phase in the metastable phase is considered as a fluctuation process
Summary
The effect of electric, magnetic and other fields on nucleation and growth of various crystals has been studied since 50-ies of the last century. The results obtained in this research show that an electric field can either stimulate or inhibit the nucleation process depending on the ratio of the dielectric constant and orientation of the applied electric field relative to the surface nucleation This approach is demonstrated in [3], which provides extensive bibliography on the effect of the electric field on crystal nucleation and growth. 2. Effect of the electric field on nucleation and growth of crystals of ammonium halides A V Shubnikov [7] observed nucleation under the action of the electric field in the ammonium chloride solution. We have conducted a detail study of the effect of the electric field on nucleation and growth of ammonium halide crystals. Theoretical aspects of the effect of the electric field on crystal nucleation and growth Thermodynamic methods used in [8] showed under the impact of the electric field, the crystallization pressure changes
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