Effect of gallium addition on physical and structural properties of Ge–S chalcogenide glasses. Issue 15 (15th October 2017)

• Record Type: Journal Article
• Authors: Zhu, Erwei; Lin, Changgui; Jiao, Qing; Song, Bao'an; Liu, Xueyun; Dai, Shixun
• Is Part Of: Ceramics international. Volume 43:Issue 15(2017)
• Page Start: 12205
• Page End: 12208
• Publication Date: 2017-10-15
• Subjects: Chalcogenide glass -- Structure -- Raman spectra -- Glass transition temperature; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.06.080
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: GeS2.5 chalcogenide glass was selected for studying effects of Ga addition on physical and structural properties. Glassy and partially crystallized samples of (100− x )GeS2.5 − x Ga (5 mol% ≤ x ≤ 40 mol%) were prepared, and their thermal and optical properties were characterized. With increasing Ga content ( x ), values of T g and optical band gap of glasses initially increased and then decreased, showing a maximal value at x = 25 mol%, that is, with stoichiometric composition of 85.7GeS2 ·14.3Ga2 S3 . These changes were discussed and correlated to evolution of network structure, which was investigated by Raman spectra recorded in glassy matrices of (100− x )GeS2.5 − x Ga (5 mol% ≤ x ≤ 40 mol%). This work contributes to understanding of composition–structure–property relationship of chalcogenide glasses.