Low-Temperature Phase Transition in Tl In Se_{2} Crystals

Authors: Oktay Zeynelabidin O ALEKPEROV, Mazahir Amirjan Oglu ALJANOV, Elmira M. Ali Gizi KERİMOVA

Abstract: Heat capacity, lattice parameter, spectral and temperature dependences of photoconductivity of chained crystal Tl In Se_{2} have been investigated in this work. For the first time, it has been found that the phase transtion takes plase at temperatures 135 and 184 K in this crystal. The changes of heat capacity, photoconductivity and lattice parameter of Tl In Se_{2} in the region of phase transition is supposed to be connected with the presence of an incommensurate phase in this crystal.

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