Semiconductor Physics, Quantum Electronics & Optoelectronics. 2012. V. 15, N 1. P. 035-037.

Dielectric properties of TlIn(S1-xSex)2 polycrystals near phase transitions
R.R. Rosul1, P.P. Guranich1, O.O. Gomonnai1, A.G. Slivka1, M.Yu. Rigan2, V.M. Rubish2, O.G. Guranich2, A.V. Gomonnai3

1Uzhhorod National University, Department of Optics, Uzhhorod, Ukraine;
2Uzhhorod Scientific and Technological Centre for Materials of Optical Information Carriers, Institute for Information Recording, NAS of Ukraine, Uzhhorod, Ukraine;
3Institute of Electron Physics, NAS of Ukraine, Uzhhorod, Ukraine

Abstract. Studies of polycrystalline TlIn(S1-xSex)2 samples under hydrostatic pressure were performed. Determined in this work were pressure coefficients near temperatures of ε(T) anomalies. Based on studying the temperature dependences of dielectric permittivity values for various hydrostatic pressures, (р, Т) phase diagram was built. Phase transformations are found in the pressure range of p > 550 MPa.

Keywords: polycrystal, hydrostatic pressure, structural transformations.

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