Raman study of lead borate glasses

Meera, B. N. ; Sood, A. K. ; Chandrabhas, N. ; Ramakrishna, J. (1990) Raman study of lead borate glasses Journal of Non-Crystalline Solids, 126 (3). pp. 224-230. ISSN 0022-3093

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Related URL: http://dx.doi.org/10.1016/0022-3093(90)90823-5


Glasses in the system xPbO: (100 - x)B2O3 (22 ≦ x ≦ 85 mol%) have been studied by Raman spectroscopy with a view to understand the effect of PbO on the borate network. The conversion of three-fold to four-fold coordinated boron takes place primarily by incorporation of BO4 into boroxol rings in the form of pentaborate and diborate units. For high lead content back conversion of four to three coordination of borons occurs and the network consists primarily of pyroborate, orthoborate and metaborate groups.

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