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Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide
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SYSNO ASEP 0576494 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Correlated EPR and optical study of charge trapping phenomena in tellurite glasses. The role of barium oxide Author(s) Hrabovský, J. (CZ)
Buryi, M. (CZ)
Babin, V. (CZ)
Ridzonova, K. (CZ)
Paurová, K. (CZ)
John, David (UJF-V) ORCID, RID, SAINumber of authors 6 Article number 122596 Source Title Journal of Non-Crystalline Solids. - : Elsevier - ISSN 0022-3093
Roč. 620, NOV (2023)Number of pages 8 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords TeO2-ZnO-BaO ; Electron paramagnetic resonance ; Photoluminescence ; Radioluminescence ; Thermoluminescence ; Charge-trapping centers OECD category Materials engineering Method of publishing Limited access Institutional support UJF-V - RVO:61389005 UT WOS 001072019900001 EID SCOPUS 85169797288 DOI https://doi.org/10.1016/j.jnoncrysol.2023.122596 Annotation Tellurite glasses of the compositions TeO2(60%)-ZnO(40%) and TeO2(60%)-ZnO(20%)-BaO(20%) were prepared in the bulk form with following grinding into powders. The samples were X-ray irradiated. The created charge trapping centers were studied in both types of samples using electron paramagnetic resonance (EPR) spectroscopy. The O- defect and two types of F+ centers were discovered. One of the F+ center remained unchanged whereas the other one as well as the O- defect were affected by the presence of BaO. Moreover, photo-, radioand thermoluminescence (PL, RL, TL, respectively) methods were applied as well. The discovered charge trapping centers have been proven to influence luminescence properties as well - improving them in the TeO2(60%)ZnO(40%) and vice versa degrading them in the TeO2(60%)-ZnO(20%)-BaO(20%) glasses. The effect was even stronger in the grinded samples as compared to the bulk ones. The role of the BaO has been disclosed as supporting oxygen leakage from the host. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2024 Electronic address https://doi.org/10.1016/j.jnoncrysol.2023.122596
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