<title>Study of ferroelastic domains in LiKSO4 single crystals</title>

Abstract

Theoretical study of the ferroelastic domain structure of LiKSO₄ (LPS) in the ferroelastic phase below 190 K has been performed using Aizu theory. On the basis of this theory the determination of the state parameters and formulation of the spontaneous strain for all existing orientation states in this phase have been performed. It has been shown that the nature of the phase transition at 190 K, also the mechanical properties of LPS in the ferroelastic phase, can be affected by a ferroelastic domain structure.