Thermodynamic properties of phases in the Yb-Bi-Se system

Babanlı M., Makhmudova M., Aliev Z., İMAMƏLİYEVA S.

Inorganic Materials, vol.47, no.4, pp.352-355, 2011 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 47 Say: 4
  • Nəşr tarixi: 2011
  • Doi nömrəsi: 10.1134/s0020168511040042
  • jurnalın adı: Inorganic Materials
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.352-355
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

The solid-state phase equilibria and thermodynamic properties of alloys in the Yb-Bi-Se system have been studied in the composition region YbSe-Bi 2 Se 3 -Se at temperatures from 300 to 400 K using emf measurements on concentration cells of the type (-)YbSe(s) | liquid electrolyte, Yb 3+ | (Yb-Bi-Se)(s)(+). The subsolidus phase diagram has been mapped out, and the partial thermodynamic functions of the YbSe pseudocomponent have been evaluated. Combining our data and the thermodynamic functions of YbSe and Bi 2 Se 3 , we have determined the partial thermodynamic functions of the ytterbium in the alloys and the integral thermodynamic functions of the ternary compounds YbBiSe 3 (-Δ f G(298 K) = 496.0 ± 2.6 kJ/mol,-Δ f H(298 K) = 503.3 ± 4.3 kJ/mol, S 0 (298 K) = 214 ± 12 J/(mol K)), YbBi 4 Se 7 (668.9 ± 8.7, 679.8 ± 9.0, 551 ± 14), and YbBi 2 Se 4 (524.7 ± 4.6, 533.9 ± 5.7, 311 ± 11). © 2011 Pleiades Publishing, Ltd.