Photo- and thermo-stimulated structural relaxation in As–S glasses

Homogeneous AsxS100−x glasses (25≤x≤42) are investigated with conventional differential scanning calorimetry. Enthalpy losses during structural relaxation are determined for the glasses aged at different temperatures in the dark and under the exposure with 620nm light. It is shown that light exposur...

Full description

Saved in:
Bibliographic Details
Published inJournal of non-crystalline solids Vol. 409; pp. 83 - 87
Main Author Kozdras, A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2015
Subjects
Calorimetry
Chalcogenide glass
Constraints
Differential scanning calorimetry
Enthalpy
Exposure
Glass
Chalcogenide glass
Calorimetry
Constraints
Online AccessGet full text

Cover

More Information
Summary:Homogeneous AsxS100−x glasses (25≤x≤42) are investigated with conventional differential scanning calorimetry. Enthalpy losses during structural relaxation are determined for the glasses aged at different temperatures in the dark and under the exposure with 620nm light. It is shown that light exposure accelerates structural relaxation in chalcogen-rich glasses, but does not modify the kinetics of As40S60 and As42S58 compositions. The results are analyzed from the temperature-dependent constraint theory point of view. •Dark and light-assisted physical aging is studied as a function of T in As–S glasses.•Temperature threshold of structural relaxation is observed.•Explanation is proposed on a basis of temperature-dependent constraint theory.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2014.11.018