SYNTHESIS AND PHYSICAL-CHEMICAL PROPERTIES OF COMPOUNDS OF PbLnBiS4 (Ln=La÷Er)

O.M.Aliyev, D.S.Ajdarova, V.M.Rahimova, S.A.Guliyeva, S.T.Bayramova

The PbBi₂S₄–PbNd₂S₄ system of Pb–Bi–Ln–S quaternary system was studied by using physico-chemical analysis methods and the formation of quaternary sulfide PbNdBiS₄melting congruently at 1145 K was determined. Compound PbNdBiS₄ is a phase of variable composition. For the first time the compunds of PbLnBiS₄ (Ln=La÷Er) type have been synthesized and their standart thermodynamic functions have been calculated.

Keywords : congruence, eutectics, peritectics, quaternary systems, thermodynamic functions

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№3 2026

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