High temperature ferroelastic phase in LiKSO₄ crystals

T. Krajewski Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780, Poznań, Poland

T. Breczewslci Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780, Poznań, Poland

P. Piskunowicz Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780, Poznań, Poland

B. Mróz Institute of Physics, A. Mickiewicz University, Grunwaldzka 6, 60-780, Poznań, Poland

Abstract

Optical studies of LiKSO₄ crystals were performed in polarized 11yh.t within the temperature range from 300 up to 1000 K. The observations confirmed the existence of two phase transitions at about 700 and 940 K respectively. The high-temperature phase between 700 and 940 K was found to be ferroelastic.

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High temperature ferroelastic phase in LiKSO₄ crystals

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High temperature ferroelastic phase in LiKSO₄ crystals