Post-irradiation relaxation in vitreous arsenic/antimony trisulphides

Instability caused by high-energy γ-irradiation was studied in (As 2S 3) 1−x(Sb 2S 3) x glasses ( x = 0, 0.1, 0.2 and 0.3) using positron annihilation lifetime spectroscopy, the obtained results being treated within a two-state trapping model. The observed decrease in the positron trapping rate of t...

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Veröffentlicht in:	Journal of non-crystalline solids 2011-01, Vol.357 (2), p.487-489
Hauptverfasser:	Balitska, V., Shpotyuk, Ya, Filipecki, J., Shpotyuk, O., Iovu, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antimony Chalcogenide vitreous semiconductors Condensed matter: structure, mechanical and thermal properties Covalence Cross-disciplinary physics: materials science rheology Exact sciences and technology Glass Glasses (including metallic glasses) Instability Materials science Physical radiation effects, radiation damage Physics Positron annihilation Positrons Relaxation Specific materials Stability Structure of liquids Structure of solids and liquids crystallography Time-dependent properties relaxation Topological defects Trapping γ ray effects
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Beschreibung
Zusammenfassung:	Instability caused by high-energy γ-irradiation was studied in (As 2S 3) 1−x(Sb 2S 3) x glasses ( x = 0, 0.1, 0.2 and 0.3) using positron annihilation lifetime spectroscopy, the obtained results being treated within a two-state trapping model. The observed decrease in the positron trapping rate of the glasses tested just after irradiation was explained due to renovation of destroyed covalent chemical bonds. This process was governed by monomolecular relaxation kinetics agreed well with corresponding changes in fundamental optical absorption edge.
ISSN:	0022-3093 1873-4812
DOI:	10.1016/j.jnoncrysol.2010.06.052