Crystallization in Magnetic and Electrical Fields.
Technical rept. no. 2 (Final),
HEBREW UNIV JERUSALEM (ISRAEL) DEPT OF PHYSICS
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The effect of the thermodynamic extensive parameters such as magnetic field H, electrical fields E and uniaxial continuous or laternative pressures P Sub c and P Sub a has been investigated on the isothermal rate of growth R and dissolution -R of some water soluble crystals in their water solution. The crystals investigated are antiferromagnetic I CuCH3COO2.H2O paramagnetic II CuSO4.5H2O and ferroelectric III Rochelle salt. The effect of H up to 150 KOe has been studied on I and II but is insignificant. The effects of E, P Sub c and P Sub a on R and -R of III are quite small, i.e. about 10 for E and P Sub c and 50 for P Sub a. In the case of E it is concluded that the magnitude and the sign of the effect, i.e. increase in -R and decrease in R can be calculated thermodynamically by using an analogue equation of the Clausius-Clapeyron relation which includes the electrical polarization and mechanical elastic strain terms to the free energy equation. Author