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Effect of nonstoichiometry on the thermoelectric properties of Tl4TiS4 crystals

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Abstract

Stoichiometric (1), Tl2S-enriched (2), and TiS2-enriched (3) Tl4TiS4 crystals (with deviations from stoichiometry within the homogeneity range of the ternary compound) have been grown by the Bridgman method, and their thermoelectric properties have been studied by the Harman technique. All of the crystals have a high thermoelectric figure of merit. The highest figure of merit is offered by crystal 1 at positive thermoelectric powers and by crystal 3 at negative thermoelectric powers. The thermoelectric properties of crystal 2 were found to irreversibly degrade over time.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, Uzhgorod National University, Pidhirna ul. 46, Uzhgorod, 88000, Ukraine

    M. Yu. Sabov, D. V. Sevryukov & E. Yu. Peresh

  2. Research Institute of Solid State Chemistry and Physics, Uzhgorod National University, ul. Voloshina 54, Uzhgorod, 88000, Ukraine

    I. V. Galagovets & V. V. Betsa

Authors
  1. M. Yu. Sabov
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  2. D. V. Sevryukov
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  3. I. V. Galagovets
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  4. V. V. Betsa
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  5. E. Yu. Peresh
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Correspondence to M. Yu. Sabov.

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Original Russian Text © M.Yu. Sabov, D.V. Sevryukov, I.V. Galagovets, V.V. Betsa, E.Yu. Peresh, 2010, published in Neorganicheskie Materialy, 2010, Vol. 46, No. 1, pp. 17–19.

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Sabov, M.Y., Sevryukov, D.V., Galagovets, I.V. et al. Effect of nonstoichiometry on the thermoelectric properties of Tl4TiS4 crystals. Inorg Mater 46, 11–13 (2010). https://doi.org/10.1134/S0020168510010036

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  • DOI: https://doi.org/10.1134/S0020168510010036

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