Version 1
: Received: 22 May 2024 / Approved: 23 May 2024 / Online: 23 May 2024 (12:33:00 CEST)
How to cite:
Kafle, A. P.; McKeown, D.; Wong-Ng, W.; Alsubaie, M.; Alenezi, M.; Pegg, I. L.; Dutta, B. Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses. Preprints2024, 2024051546. https://doi.org/10.20944/preprints202405.1546.v1
Kafle, A. P.; McKeown, D.; Wong-Ng, W.; Alsubaie, M.; Alenezi, M.; Pegg, I. L.; Dutta, B. Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses. Preprints 2024, 2024051546. https://doi.org/10.20944/preprints202405.1546.v1
Kafle, A. P.; McKeown, D.; Wong-Ng, W.; Alsubaie, M.; Alenezi, M.; Pegg, I. L.; Dutta, B. Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses. Preprints2024, 2024051546. https://doi.org/10.20944/preprints202405.1546.v1
APA Style
Kafle, A. P., McKeown, D., Wong-Ng, W., Alsubaie, M., Alenezi, M., Pegg, I. L., & Dutta, B. (2024). Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses. Preprints. https://doi.org/10.20944/preprints202405.1546.v1
Chicago/Turabian Style
Kafle, A. P., Ian L Pegg and Biprodas Dutta. 2024 "Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses" Preprints. https://doi.org/10.20944/preprints202405.1546.v1
Abstract
We have investigated the influence of the relative proportions of glass formers in a series of lithium alumino-borosilicate glasses with respect to electrical conductivity () and glass transition temperature (Tg) as functions of glass structure, as determined by Raman spectroscopy. The ternary lithium alumino-borate glass exhibits the highest and lowest Tg among all the compositions of the glass series, 30Li2O•3Al2O3• (67-x) B2O3•xSiO2. However, as B2O3 is replaced by SiO2, a shallow minimum in as well as a shallow maximum in Tg are observed near x = 27, where the Raman spectra indicate isolated diborate/tetraborate/orthoborate groups are being progressively replaced by danburite/reedmergnerite-like borosilicate network units. Overall, as the glasses become silica-rich, is minimized, while Tg is maximized. In general, these findings show correlations among Tg, (sensitive to network polymerization), (proportional to ionic mobility), and the different borate and silicate glass structural units as determined by Raman spectroscopy. X-ray diffraction analyses demonstrate the absence of appreciable crystallinity in the glasses investigated. However, scanning electron microscopy (SEM) images of HF-etched samples showed that glasses, and especially the borate-rich compositions comprise two distinct glassy phases. The isolated phase is 25-100 nm in diameter, dispersed evenly in a glassy matrix.
Keywords
Mixed glass former effect, Raman spectroscopy, Glass transition temperature, Electrical conductivity, Van der Pauw Four Probe method
Subject
Chemistry and Materials Science, Electronic, Optical and Magnetic Materials
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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