Optical and dielectric properties of CuInP<sub>2</sub>S<sub>6</sub> layered crystals at high hydrostatic pressure
P P Guranich; A G Slivka; V S Shusta; O O Gomonnai; I P Prits; P P Guranich; Uzhhorod National University, Pidhirna Str. 46, Uzhhorod 88000, Ukraine; A G Slivka; Uzhhorod National University, Pidhirna Str. 46, Uzhhorod 88000, Ukraine; V S Shusta; Uzhhorod National University, Pidhirna Str. 46, Uzhhorod 88000, Ukraine; O O Gomonnai; Uzhhorod National University, Pidhirna Str. 46, Uzhhorod 88000, Ukraine; I P Prits; Uzhhorod National University, Pidhirna Str. 46, Uzhhorod 88000, Ukraine
Журнал:
Journal of Physics: Conference Series
Дата:
2008-07-01
Аннотация:
Effect of hydrostatic pressure on the birefringence and dielectric properties of CuInP<sub>2</sub>S<sub>6</sub> crystals is studied. The pressure behaviour of the phase transition temperature confirms that the phase transition in these crystals belongs to the order/disorder type. An additional line of birefringence anomalies in the ferrielectric phase is revealed. Based on the studies of the optical and dielectric properties of CuInP<sub>2</sub>S<sub>6</sub> crystals their (p, T) diagram was constructed.
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