The Influence of Magnetic Field on Crystallization from Solutions
نویسندگان
چکیده
The influence of magnetic field on some kinetic crystallization parameters of the systems zinc sulfate – water and copper sulfate – water were investigated in a series of controlled batch cooling experiments. The solutions were exposed to magnetic fields with different intensities, up to a maximum of 0.7 T. A clear influence of magnetic field on the zinc sulfate crystallization parameters was found: an increase in the saturation temperature, a decrease in the metastable zone width, and increased growth rate and average crystal size. The magnetic effect (“magnetic memory”) remained in the solution for at least 150 min after the magnetic exposure. These effects were observed for the diamagnetic zinc sulfate, but not in similar experiments with paramagnetic copper sulfate.
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