Phase Relations along the Cu2S(Sb2S3, PbSb2S4, Pb5Sb4S11)–PbCuSbS3 Joins in the Pseudoternary System Cu2S–PbS–Sb2S3 and Physical Properties of (Sb2S3)1 –x(PbCuSbS3)x Solid Solutions

Abstract

Phase relations along the Cu₂S(Sb₂S_3, PbSb₂S₄, Pb₅Sb₄S₁₁)–PbCuSbS₃ joins in the pseudoternary system Cu₂S–PbS–Sb₂S₃ have been studied using a variety of physicochemical characterization techniques (differential thermal analysis, X-ray diffraction, microstructural analysis, microhardness tests, and immersion density measurements). All of the joins have been shown to be pseudobinary, with eutectic phase relations. We have investigated the electrical transport properties of (Sb₂S₃)_1 – x(PbCuSbS₃)_x solid solutions, which have been shown to be p-type semiconductors.