Magnetism

Effect of magnetic treatment of KDP and ADP crystals and solutions on their equilibrium temperature

S. I. Kovalev, A. E. Smirnov, A. È. Voloshin

Institute of Cristallography Russian Academy of Sciences, Moscow

Abstract: The effect of magnetic treatment of KDP and ADP crystals and solutions on their equilibrium temperature has been revealed and studied. The change in the temperature reaches a maximum immediately after the magnetization. Then, the effect decreases monotonically, and the equilibrium temperature approaches the equilibrium value for 5 h. It has been found that the observed decrease in the solubility depends on the impurity concentration, and it is maximum in magnetically treated KDP crystals with a chromium impurity; then, it decreases in the series: KDP crystal, KDP–ADP crystals in KDP–ADP solution, KDP crystal in KDP–ADP solution, and KDP solution. For all five systems under study, the relaxation times have been determined. It has been revealed that the effect rapidly increases and reaches saturation at $B$ = 0.02 T. The energy effects in the crystals and solutions have been estimated.

Received: 18.10.2011
Accepted: 12.01.2012

 English version: Physics of the Solid State, 2012, 54:8, 1598–1601

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