Rev.Adv.Mater.Sci.(RAMS)
No 1, Vol. 14, 2007, pages 81-84

CRYSTAL LATTICE DYNAMIC EFFECTS FOR SASD TYPE CRYSTALS DOPED WITH Cr+3 AS DETECTED BY EPR FOR T > Tc

I.E. Lipiński, J. Kuriata and N. A. Korynevskii

Abstract

The effect of lattice vibration on the value of the Dzz parameter for SASD type crystals doped with is discussed. It is shown that even for the temperatures much higher than Tc, the inclusion of short and long range correlations taking place for two inequivalent active groups SO4(|)(SeO4(|)) and SO4(||)(SeO4(||)) modify temperature behavior of the second-order spin-hamiltonian parameters expected for simple models for crystal vibrations.

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