Homopolar bonds in Se-rich Ge‒As‒Se chalcogenide glasses
Date
2016
Authors
Xu, Si-Wei
Wang, Rong-Ping
Yang, Zhi-Yong
Wang, Li
Barry, Luther-Davies
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Volume Title
Publisher
IOP Publishing
Abstract
We have prepared three groups of Ge-As-Se glasses in which the Se content is 5.5 mol%, 10 mol%, and 20 mol% rich, respectively. We explored the possibility of suppressing the formation of the Ge-Ge and As-As homopolar bonds in the glasses. Thermal kinetics analysis indicated that the 5.5 mol% Se-rich Ge11.5As24Se64.5 glass exhibits the minimum fragility and thus is most stable against structural relaxation. Analysis of the Raman spectra of the glasses indicated that the Ge-Ge and As-As homopolar bonds could be almost completely suppressed in 20 mol% Se-rich Ge₁₅As₁4Se₇₁ glass.
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Source
Chinese Physics B
Type
Journal article
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Access Statement
Open Access