y - Irradiation Effect On The Ferroelastic High Temperature Phase In LiKSO4 Crystals

Abstract

The effect of •y -irradiation on the thermodynamic parameters of LiKSC>4 single crystals, in the high temperature range 300-1000 K, is investigated. The results show that T,; as well as Cp decrease with dose rate. However, when the dose is greater than 10 MRad, both Cp and T,; increase with increasing dose. The analysis indicators that for high dose the interaction of defects is prominent, causing the stabilization of the low temperature phase. The energy of ferroelastic ordering (U), as well as the number of displaced atoms (N), were also estimated. It was found that, with increasing dose rate, U decreases while N increases