Temperature-dependent structural relaxation in As40Se60 glass
- 1. Lviv Sci. and Res. Institute of Materials of SRC 'Carat', 202 Stryjska str., 79031 Lviv (Ukraine)
- 2. Academy of Management and Administration, 18 Niedzialkowski str., Opole, PL-45085 (Poland)
- 3. Opole University of Technology, 75, Ozimska str., Opole, PL-45370 (Poland)
- 4. Jan Dlugosz University, 13/15, al. Armii Krajowej, 42201, Czestochowa (Poland)
- 5. Department of Materials Science and Engineering, Lehigh University, 5 East Packer Avenue, Bethlehem, PA 18015-3195 (United States)
Description
The origin of structural relaxation in As40Se60 glass at different annealing temperatures is studied by differential scanning calorimetry (DSC) and in situ extended X-ray absorption fine structure (EXAFS) methods. Strong physical aging effect, expressed through the increase of endothermic peak area in the vicinity of Tg, is recorded by DSC technique at the annealing temperatures Ta>90oC. EXAFS data show that the observed structural relaxation is not associated with significant changes in the short-range order of this glass. An explanation is proposed for this relaxation behavior assuming temperature-dependent constraints. -- Highlights: → In this study we report experimental evidence for temperature-dependent constraints theory. → Structural relaxation of As2Se3 glass at higher annealing temperatures is studied by DSC technique. → Accompanied changes in the structure are monitored by in situ EXAFS measurements.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physleta.2011.06.056Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2011.06.056;
- PII
- S0375-9601(11)00799-7;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 375
- Journal Issue
- 33
- Journal Page Range
- p. 3032-3036
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45056043
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION; ABSORPTION SPECTROSCOPY; AGING; ANNEALING; CALORIMETRY; FINE STRUCTURE; GLASS; MONITORS; ORIGIN; PEAKS; RELAXATION; TEMPERATURE DEPENDENCE; X RADIATION; X-RAY SPECTROSCOPY
- Descriptors DEC
- ELECTROMAGNETIC RADIATION; HEAT TREATMENTS; IONIZING RADIATIONS; MEASURING INSTRUMENTS; RADIATIONS; SORPTION; SPECTROSCOPY
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.