Origin of structural instability in TlInS2(1-x)Se2x solid solutions

Seyidov M. Y. , Suleymanov R. A. , Salehli F.

PHYSICA SCRIPTA, vol.84, no.1, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 84 Issue: 1
  • Publication Date: 2011
  • Doi Number: 10.1088/0031-8949/84/01/015601
  • Title of Journal : PHYSICA SCRIPTA

Abstract

The influence of the isovalent substitution of selenium for sulfur in the anion sublattice of mixed TlInS2(1-x)Se2x crystals has been studied by means of dielectric measurements. It is shown that transformations in the In-4(SxSe1-x)(10) structural unit must be taken into account considering the nature of possible phase transitions in TlInS2(1-x)Se2 solid solutions. Possible mechanisms of the phase transition including instabilities in the electronic subsystem of pure TlInSe2 crystals are discussed.