121Sb Mössbauer Study of Sb2S3–As2S3–Tl2S Glasses

The local environment of antimony atoms in vitreous samples of the ternary system Sb2S3–As2S3–Tl2S is studied by121Sb Mössbauer spectroscopy. The results have been interpreted by means of EBV (empirical bond valence) and EBLV (empirical bond length valence) calculations. Variations in isomer shifts...

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Bibliographic Details
Published in:Journal of solid state chemistry 1997-11, Vol.133 (2), p.458-465
Main Authors: Durand, J.-M., El Idrissi-Raghni, M.A., Olivier-Fourcade, J., Jumas, J.-C., Langouche, G.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Disordered solids
Exact sciences and technology
Glasses
Physics
Structure of solids and liquids
crystallography
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Summary:The local environment of antimony atoms in vitreous samples of the ternary system Sb2S3–As2S3–Tl2S is studied by121Sb Mössbauer spectroscopy. The results have been interpreted by means of EBV (empirical bond valence) and EBLV (empirical bond length valence) calculations. Variations in isomer shifts are attributed to changes in the environment of antimony atoms. The isomer shift is found to be a very sensitive parameter reflecting variations in the mean coordination number and in the mean Sb–S bond length. The results presented here confirm the random substitution of As by Sb in the binary system As2S3–Sb2S3and the competitive effects—breaking of As–S–As bridges by Tl and formation of As–S–Sb bridges—in the ternary system Sb2S3–As2S3–Tl2S, in agreement with previous XAFS studies.
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1997.7510