Homogeneity ranges of Tl 5Te 2Cl and Tl 5Te 2Br

Babanlı M., Chiragov M., Yusibov Y.

Inorganic Materials, vol.44, no.10, pp.1069-1075, 2008 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 44 Say: 10
  • Nəşr tarixi: 2008
  • Doi nömrəsi: 10.1134/s0020168508100087
  • jurnalın adı: Inorganic Materials
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.1069-1075
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

This paper systematizes phase-diagram data for the Tl-TlCl(Br)-Te systems and presents their 500-K subsolidus phase diagrams. Tl 5Te 2Cl and Tl 5Te 2Br (Tl 5Te 3 structure) are shown to be nonstoichiometric compounds with wide homogeneity ranges, which have been accurately determined using emf measurements, x-ray diffraction, and microhardness tests. Using emf data for reversible concentration cells with a thallium electrode, we have evaluated the partial thermodynamic functions of the thallium in the alloys studied, the standard thermodynamic functions of formation of Tl 5Te 2Cl and Tl 5Te 2Br, and their standard entropies. The crystal chemistry of these phases of variable composition is discussed in relation to the Tl 5Te 3 structure. © 2008 MAIK Nauka.