Phase relations in the Ag2S-CdS-SnS2 system and the crystal structure of the compounds

Based on the results of X-ray phase analysis, an isothermal section of the quasi-ternary system Ag2S-CdS-SnS2 at 298 K was constructed. The existence of the Ag2CdSnS4 compound was confirmed, and a new quaternary phase Ag2CdSn3S8 was discovered. The crystal structure of both compounds was refined usi...

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Bibliographic Details
Published in:Journal of alloys and compounds 2005-08, Vol.399 (1-2), p.173-177
Main Authors: PARASYUK, O. V, OLEKSEYUK, I. D, PISKACH, L. V, VOLKOV, S. V, PEKHNYO, V. I
Format: Article
Language:English
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
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Summary:Based on the results of X-ray phase analysis, an isothermal section of the quasi-ternary system Ag2S-CdS-SnS2 at 298 K was constructed. The existence of the Ag2CdSnS4 compound was confirmed, and a new quaternary phase Ag2CdSn3S8 was discovered. The crystal structure of both compounds was refined using X-ray powder method. Ag2CdSnS4 crystallizes in the orthorhombic space group Cmc2(1) with the unit cell parameters a=0.41015(3), b=0.70224(4), c=0.66946(4) nm (R(I)=0.0550). The Ag2CdSn3S8 crystal structure refines well in both the tetragonal structure of the rhodostannine type (space group I4(1)/a, a=0.76163(6), c=1.0771(2) nm, R(I)=0.0750) and the cubic structure of the chalcospinel type (space group Fd3m; a = 1.07635(2) nm, R(I) =0.0781). The phase diagram of the Ag8SnS6-CdS section was constructed, which is of the eutectic type. The eutectic point coordinates are ~47 mol.% CdS and 1082 K.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2005.03.023