THERMODYNAMIC PROPERTIES OF Pb6Sb6Se17

  • Shabnam Hamlet Mansimova PhD student of Baku State University; ph.: (+994) 502296446
  • Elnur Najaf Orujlu magistrate of Institute of Catalysis and Inorganic Chemistry Azerbaijan National Academy of Sciences
  • Samina Geys Sultanova PhD student of Baku State University; ph.: (+994) 556002213
  • Mahammad Baba Babanly Dr. Sci. (Chem.), Deputy Director of Institute of Catalysis and Inorganic Chemistry Azerbaijan National Academy of Sciences; ph.: (+995) 518378621, e-mail: babanlymb@gmail.com
Keywords: lead-antimony selenides, Pb6Sb6Se17, EMF method, thermodynamic properties

Abstract

The Pb-Sb-Se system was investigated in the PbSe-Pb6Sb6Se17-Sb2Se3-Se composition area and temperature range 300–450 K using EMF measurements on reversible concentration cells of the type

(–)   PbSe(s) | liquid electrolyte, Pb2+ | (Pb–Sb–Se)(s)(+).

It was shown that this subsystem consists of two three-phase regions, limited by the Pb6Sb6Se17-Sе tie-line. Partial thermodynamic functions of PbSe and lead in tree-phase Pb6Sb6Se17–Sb2Se3–Se region are calculated from the equations for the EMF temperature dependences. The standard Gibbs energy of formation, standard enthalpy of formation and standard entropy of the Pb6Sb6Se17 compound were calculated based these data and using the thermodynamic functions for PbSe and Sb2Se3.

ACKNOWLEDGMENT

The work has been carried out within the framework of the international joint research laboratory “Advanced Materials for Spintronics and Quantum Computing” (AMSQC) established between Institute of Catalysis and Inorganic Chemistry of ANAS (Azerbaijan) and Donostia International Physics Center (Basque Country, Spain).

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Published
2017-12-27
How to Cite
Mansimova, S. H., Orujlu, E. N., Sultanova, S. G., & Babanly, M. B. (2017). THERMODYNAMIC PROPERTIES OF Pb6Sb6Se17. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 19(4), 536-541. https://doi.org/10.17308/kcmf.2017.19/234
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