Isoconversional Analysis of Thermally Stimulated Effects in Cux(As2Se3)100-x Glasses(Article)(Open Access)
- aUniversity of Novi Sad, Faculty of Sciences, Department of Physics, Trg D. Obradovića 4, Novi Sad, 21000, Serbia
- bUniversity of Novi Sad, BioSense Institute, Dr Zorana Dindića 1, Novi Sad, 21000, Serbia
- cUniversity of Novi Sad, Faculty of Technical Sciences, Trg D. Obradovića 6, Novi Sad, 21000, Serbia
Abstract
Through isoconversional analysis of differential scanning calorimetry data, thermally induced processes of glass transition and crystallization in Cux(As2Se3)100-xchalcogenide glasses (x =1, 5, 10, and 15 at.%) were investigated. The characteristic values of activation energy and its changes during the processes were calculated using the advanced isoconversional method developed by S. Vyazovkin as well as isoconversional forms of Kissinger and Moynihan relations. The results showed the variation of the activation energy with the extent of conversion. The activation energy values are slightly changing with the increase of Cu content from 1 to 5 at.%, while more significant changes are detected after a further increase of Cu content up to 15 at.%. The crystallization processes of As2Se3in composition with 1 at.% of Cu and CuAsSe2and Cu3AsSe4in composition with 10 at.% of Cu were analyzed. Isoconversional analysis showed that crystallization is a complex process and that the apparent activation energy of crystallization of As2Se3and CuAsSe2structural units decreases with the extent of conversion increase. © 2023 Polish Academy of Sciences. All rights reserved.
Indexed keywords
| Engineering controlled terms: | Activation analysisActivation energyCopperDifferential scanning calorimetryGlassGlass transition |
|---|---|
| Engineering uncontrolled terms | Advanced isoconversional methodChalcogenide glassCharacteristics valuesCu contentEnergy valueIn compositionsIsoconversionalIsoconversional analysisKissingerThermally induced |
| Engineering main heading: | Thermoanalysis |
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja | 200125,451-03-68/2022-14/200125 | MPNTR |
| Provincial Secretariat for Higher Education and Scientific Research, Autonomous Province of Vojvodina | /2022-01/2 |
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1
The authors acknowledge the financial support of the Provincial Secretariat for Higher Education and Scientific Research (Project: Novel chalcogenide materials for efficient transformation and use of energy, No.142-451-3128/2022-01/2) and the Ministry of Education, Science and Technological Development of the Republic of Serbia (Grant No. 451-03-68/2022-14/200125).
- ISSN: 05874246
- CODEN: ATPLB
- Source Type: Journal
- Original language: English
- DOI: 10.12693/APhysPolA.143.369
- Document Type: Article
- Publisher: Polska Akademia Nauk
Štrbac, G.R.; University of Novi Sad, Faculty of Sciences, Department of Physics, Trg D. Obradovića 4, Novi Sad, Serbia;
© Copyright 2023 Elsevier B.V., All rights reserved.
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