Raman spectroscopy study of pressure-induced structural changes in sodium borate glass
| Autor: | Mouritz Nolsøe Svenson, Morten Mattrup Smedskjær, Michael Guerette, Liping Huang |
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| Rok vydání: | 2016 |
| Předmět: |
In situ
Materials science Analytical chemistry Mineralogy A diamond chemistry.chemical_element Borate glass 02 engineering and technology 021001 nanoscience & nanotechnology Compression (physics) Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials symbols.namesake chemistry 0103 physical sciences symbols Materials Chemistry Ceramics and Composites 010306 general physics 0210 nano-technology Spectroscopy Glass transition Raman spectroscopy Boron |
| Zdroj: | Svenson, M N, Guerette, M, Huang, L & Smedskjær, M M 2016, ' Raman spectroscopy study of pressure-induced structural changes in sodium borate glass ', Journal of Non-Crystalline Solids, vol. 443, pp. 130-135 . https://doi.org/10.1016/j.jnoncrysol.2016.04.023 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2016.04.023 |
| Popis: | Pressure-induced structural changes in a sodium borate glass have been studied up to ~ 9 GPa by in situ micro-Raman spectroscopy in a diamond anvil cell at ambient temperature. The results show a decrease in the fraction of boroxol rings and an increase in the fraction of non-ring structures with increasing pressure. These findings are compared with Raman spectra of the same glass composition compressed at 1 GPa at its glass transition temperature (406 °C). We show similarities in the medium-range structural changes of the borate glass compressed at high-pressure/low-temperature (9 GPa, 25 °C) and intermediate-pressure/high-temperature (1 GPa, ~ 400 °C) conditions. The structural changes are elastic during cold compression but inelastic as a result of the hot compression. We discuss this difference in relation to densification and Raman inactive structural changes. |
| Databáze: | OpenAIRE |
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