Inorganic Materials

, Volume 36, Issue 2, pp 132–133 | Cite as

Thermal expansion of TlInX2 (X = S, Se, Te)

  • M. M. Kurbanov
  • D. D. Bairamov
  • N. S. Sardarova


The thermal expansion coefficients of THnS2, TlInSe2, and TlInTe2 were measured in the range 77– 350 K. The data for both single-crystal and polycrystalline TlInS2 were found to exhibit features attributable to ferroelectric and commensurate-incommensurate phase transitions. The measured thermal expansion coefficients of THnS2, TlInSe2, and TlInTe2 were used to calculate the Debye temperatures and root-mean-square dynamic atomic displacements. In going from TlInS2 to TlInSe2 and to TlInTe2, the Debye temperature increases and the root-mean-square atomic displacement decreases, which can be attributed to the increase in bond ionicity.


Thermal Expansion Thermal Expansion Coefficient Debye Temperature Chain Structure Structural Phase Transition 
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Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • M. M. Kurbanov
    • 1
  • D. D. Bairamov
    • 1
  • N. S. Sardarova
    • 1
  1. 1.Azerbaijani Industrial InstituteSumgaitAzerbaijan

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