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A Raman Scattering Study of the Temperature Dependence of Boroxol Ring Clusters in B2 O3-GeO2 and B2 O3-GeO2-SiO2 Glasses.

Published online by Cambridge University Press:  25 February 2011

I. N. Chakraborty  and
R. A. Condrate Sr.
I. N. Chakraborty
Affiliation:
Institute of Glass Science and Engineering, NYS College of Ceramics, Alfred University, Alfred, New York 14802
R. A. Condrate Sr.
Affiliation:
Institute of Glass Science and Engineering, NYS College of Ceramics, Alfred University, Alfred, New York 14802
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Abstract

This Raman study indicates that the boroxol ring concentrations for glasses in the B2 O3-GeO2 and B2 O3-GeO2-SiO2 systems are dependent upon temperature and composition. Ring breakage and formation occur well below Tg. An Arrhenius plot of intensity data for borogermanate g glass indicates that the heat of ring rupture is ca. 7.7 Kcal/mole. The boroxol ring concentrations in various glasses were also investigated at room temperature after various heat treatments. The structural interpretation from Raman scattering data was compared with that from IR data.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 41: Symposium K – Advanced Photon and Particle Techniques for the Characterization of Defects in Solids , 1984 , 113
Copyright
Copyright © Materials Research Society 1985

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References

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