Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1483107 | Journal of Non-Crystalline Solids | 2008 | 4 Pages |
Abstract
In this work, multiple effects of γ-ray irradiation on properties of bulk Ge-As-Se chalcogenide glasses were studied. Increased density (Ï), thermal expansion coefficient (α) and decreased optical band gap (Eopt) were observed after irradiation, depending on glass compositions. Glasses with stoichiometric (GeSe2)100âx(As2Se3)x compositions showed linear correlations between As2Se3 proportion x and irradiation sensitivity, which is expressed by ÎÏ/Ï, Îα/α and ÎEopt/Eopt. Nonstoichiometric glasses (Ge2Se3)100âx(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
Authors
Fang Xia, S. Baccaro, Hua Wang, Wei Hua, Huidan Zeng, Xianghua Zhang, Guorong Chen,