PbTe-Bi2Te3-Te system studied by EMF measurementsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The Pb-Bi-Te system has been studied in the composition region PbTe-Bi2Te3-Te at temperatures from 300 to 430 K using emf measurements on reversible concentration cells of the type (-)PbTe(s)| liquid electrolyte, Pb2+ | (Pb-Bi-Te)(s)(+). The subsolidus phase diagram inferred from the emf data includes the ternary compounds PbBi6Te10, PbBi4Te7, Pb2Bi6Te11, and PbBi2Te4 of the nPbTe . mBi(2)Te(3) homologous series. Best fit equations for the temperature-dependent emf data were used to determine the partial thermodynamic functions (and) of the PbTe in the alloys. Using these partial molar functions, subsolidus phase diagram data for the PbTe-Bi2Te3-Te system, and relevant data for PbTe and Bi2Te3, we calculated the standard thermodynamic functions of formation and standard entropies of the above ternary compounds.