文献类型：会议论文

英文题名：γ-ray irradiation induced multiple effects on Ge-As-Se chalcogenide glasses

作者：Xia, Fang[1,2];Baccaro, S.[2];Wang, Hua[1];Hua, Wei[1];Zeng, Huidan[1];Zhang, Xianghua[1];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat Minist Educ, Shanghai 200237, Peoples R China;[2]ENEA FIM FIS ION, I-00060 Rome, Italy

会议论文集：Joint Conference of the International Symposium on Glass/Annual Meeting of the International-Commission-on-Glass

会议日期：APR 10-14, 2005

会议地点：Shanghai, PEOPLES R CHINA

语种：英文

外文关键词：infrared glasses; chalcogenides; optical properties; radiation

摘要：In this work, multiple effects of gamma-ray irradiation on properties of bulk Ge-As-Se chalcogenide glasses were studied. Increased density (rho), thermal expansion coefficient (alpha) and decreased optical band gap (E-opt) were observed after irradiation, depending on glass compositions. Glasses with stoichiometric (GeSe2)(100-x)(AS(2)Se(3))(x) compositions showed linear correlations between As2Se3 proportion x and irradiation sensitivity, which is expressed by Delta rho/rho, Delta alpha/alpha and Delta E-opt/E-opt. Nonstoichiometric glasses (Ge2Se3)(100-x)(As2Se3)(x) exhibited irregular variations. The phenomena are discussed in terms of chemical bonds transition and structural evolution under gamma-ray irradiation. (c) 2007 Elsevier B.V. All rights reserved.