Raman spectral studies of borate glasses

Raman spectroscopic measurements in borate glasses have been reviewe. The review shows that the technique is useful in identifying the structural groups present in the borate on the basis of the Krogh-Moe hypothesis. Vitreous B 2O 3 and alkali borates are extensvvely studied and a satisfactory assig...

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Bibliographic Details
Published in:Journal of Non-Crystalline Solids 1993, Vol.159 (1), p.1-21
Main Authors: Meera, B.N., Ramakrishna, J.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Disordered solids
Exact sciences and technology
Physics
Structure of solids and liquids
crystallography
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Summary:Raman spectroscopic measurements in borate glasses have been reviewe. The review shows that the technique is useful in identifying the structural groups present in the borate on the basis of the Krogh-Moe hypothesis. Vitreous B 2O 3 and alkali borates are extensvvely studied and a satisfactory assignment of bands is possible by a careful consideration of the literature. A cation effect on the borate netwoork is observed. Availaable measurements on binary borates other than alkali borates and on ternary borates are limited and more work is required to identify the structural modifications that take place with composition. Mixed alkali effect is reported only lithium-caesium borade and shows the formation of non-bridging oxygens, destroying the six-membered rings when Li 2O is replaced by Cs 2O. Fast ionic glasses (alkali borates containing alkali halides) yield the same Raman spectra as the alkali borates, except when the alkali is a fluoride.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(93)91277-A