Investigation of the R2S3-Cu2S-PbS (R=Y, Dy, Ho and Er) systems

• Published in: Journal of alloys and compounds Vol. 431; no. 1-2; pp. 77 - 84
• Main Authors: GULAY, L. D, YA. SHEMET, V, OLEKSEYUK, I. D, STIEPIEN-DAMM, J, PIETRASZKO, A, KOLDUN, L. V, FILIMONYUK, J. O
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier 04-04-2007
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Inorganic compounds; Materials science; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of other materials; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Phase diagrams; Rare-earth compounds; X-ray powder diffraction; X-ray single crystal diffraction; Pb compounds; XRD; Sulfides; Monocrystals; Solid solutions; Isothermal section; S compounds; Cu compounds; Crystal structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2006.05.029

The interactions between the components in the R2S3-Cu2S-PbS (R=Y, Dy, Ho and Er) systems at 870K were determined using X-ray single crystal and powder diffraction. The existence of the compounds RCuS2 (R=Y, Dy, Ho and Er) and the solid solutions Y(2+x)/3Cu2-xS2 (0 < =x < =0.52), Dy(2+x)/3Cu2-xS2 (0 < =x < =0.55), Ho(2+x)/3Cu2-xS2 (0 < =x < =0.61), Er(2+x)/3Cu2-xS2 (0 < =x < =0.58) was confirmed in the R2S3-Cu2S (R=Y, Dy, Ho and Er) sections. The existence of the compounds R2PbS4 (R=Y, Ho, Dy, Er) and the solid solution Dy2+2x/3Pb1-xS4 (x=0.44-0.50) was established in the R2S3-PbS (R=Y, Dy, Ho and Er) sections. The formation of the compounds Y5+xCu1-xPb3-xS11 (x=0.28), Dy5CuPb3S11, Ho5Cu1+xPb3-x/2S11 (x=0.25), Er5CuPb3S11 in the R2S3-Cu2S-PbS (R=Y, Dy, Ho and Er) systems was established at the first time, the existence of the compounds R3.33CuPb1.5S7 (R=Y, Dy, Ho and Er) and RCuPbS3 (R=Y, Dy, Ho and Er) was confirmed.