Article ID Journal Published Year Pages File Type
1483107 Journal of Non-Crystalline Solids 2008 4 Pages PDF
Abstract
In this work, multiple effects of γ-ray irradiation on properties of bulk Ge-As-Se chalcogenide glasses were studied. Increased density (ρ), thermal expansion coefficient (α) and decreased optical band gap (Eopt) were observed after irradiation, depending on glass compositions. Glasses with stoichiometric (GeSe2)100−x(As2Se3)x compositions showed linear correlations between As2Se3 proportion x and irradiation sensitivity, which is expressed by Δρ/ρ, Δα/α and ΔEopt/Eopt. Nonstoichiometric glasses (Ge2Se3)100−x(As2Se3)x exhibited irregular variations. The phenomena are discussed in terms of chemical bonds transition and structural evolution under γ-ray irradiation.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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