Infrared study of cadmium borogermanate glasses

The ternary cadmium borogermanate glasses have been studied over their entire glass-forming range by infrared spectroscopy (3800−50 cm −1). The spectral and structural characteristics of these glasses have been analysed with respect to the vibrational spectra of binary and ternary glasses of similar...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1986-08, Vol.85 (1), p.54-68
Main Authors: Chryssikos, G.D., Turcotte, D.E., Mulkern, R.V., Bray, P.J., Risen, W.M.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glasses
Structure, analysis, properties
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Summary:The ternary cadmium borogermanate glasses have been studied over their entire glass-forming range by infrared spectroscopy (3800−50 cm −1). The spectral and structural characteristics of these glasses have been analysed with respect to the vibrational spectra of binary and ternary glasses of similar structure, and in light of the 11B and 113Cd NMR spectra of the same glass compositions. Tetracoordination of boron and hexacoordination of germanium both occur, in a competitive way, as a result of modification of the borogermanate network by CdO. The c concentrations of three- and four-coordinate boron and four- and six-coordinate germanium vary with composition in a complex but systematic maner described by a quasi-equilibrium expression for the melt quenched into the glassy state.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(86)90078-5