Raman spectroscopy studies of xNa(2)S+(1-X)B2S3 glasses and polycrystals
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- Title
- Raman spectroscopy studies of xNa(2)S+(1-X)B2S3 glasses and polycrystals
- Author
- Royle, M; Cho, Jaephil; Martin, SW
- Keywords
- SHORT-RANGE ORDER; BORATE GLASSES; VIBRATIONAL-SPECTRA; B-11 NMR; XNA2S+(1-X)B2S3 GLASSES; CRYSTAL-STRUCTURE; B2O3; B2S3; SCATTERING; RUBIDIUM
- Issue Date
- 2001-02
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, v.279, no.2-3, pp.97 - 109
- Abstract
- The Raman spectra of binary xNa2S+(1-x)B2S3 glasses and polycrystals have been measured for the first time and are used to develop a structural model of the sodium thioborate glasses. The Raman spectra confirm our previous infrared (IR) experimental conclusions that the structure of vitreous (ν-B2S3) is comprised of B3(0) groups and six-membered rings. It was also found that as sodium sulfide is added to the glass in the low alkali (x<0.35) glass forming region, the B4 groups are formed at the expense of the B3(0) groups first and then from the six-membered ring groups. The Raman spectra are also consistent with the presence of a pyramidal structural arrangement of B4 groups with trigonally coordinated sulfur atoms. This structure could explain the existence of the super-stoichiometric amounts of B4 groups found using nuclear magnetic resonance (NMR). Glasses in the high alkali region (0.50
- URI
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- DOI
- 10.1016/S0022-3093(00)00344-6
- ISSN
- 0022-3093
- Appears in Collections:
- ECHE_Journal Papers
- Files in This Item:
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