Evolution of domain structure in KSc(MoO4)2

Abstract

Temperature evolution of domain pattern in KSc(MoO4)2is investigated by means of polarized light microscopy. The existence of phase transitions at T1=260 K, T2=240 K and T3=183 K is proved. Phase transitions at T2and T3are accompanied by changes of predominant type of ferroelastic domain walls, thermal hysteresis and hyper-photoelastic effect.