Short and Medium Range Order in Ga–Ge–S Glasses: An X-Ray Absorption Spectroscopy Study at Room and Low Temperatures

Glasses belonging to the Ga2S3–GeS2line are studied at room temperature and at 7 K by XAFS spectroscopy at Ga and Ge K-edges. The results show that the addition of Ga2S3to the GeS2glass former leads to the formation of tetrahedral units of GaS4, linked to the GeS4tetrahedra. Mainly low temperature m...

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Veröffentlicht in:Journal of solid state chemistry 1996-04, Vol.123 (1), p.60-67
Hauptverfasser: Loireau-Lozac'h, A.M., Keller-Besrest, F., Bénazeth, S.
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container_issue 1
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container_title Journal of solid state chemistry
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creator Loireau-Lozac'h, A.M.
Keller-Besrest, F.
Bénazeth, S.
description Glasses belonging to the Ga2S3–GeS2line are studied at room temperature and at 7 K by XAFS spectroscopy at Ga and Ge K-edges. The results show that the addition of Ga2S3to the GeS2glass former leads to the formation of tetrahedral units of GaS4, linked to the GeS4tetrahedra. Mainly low temperature measurements of the Ge K-edge allow an analysis of the short and medium range order. As the Ga content increases a substitution takes place of corner-sharing linkages with edge-sharing linkages of (Ge/Ga)S4tetrahedral units.
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subjects Condensed matter: structure, mechanical and thermal properties
Disordered solids
Exact sciences and technology
Glasses
Physics
Structure of solids and liquids
crystallography
title Short and Medium Range Order in Ga–Ge–S Glasses: An X-Ray Absorption Spectroscopy Study at Room and Low Temperatures
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