A Review on Infrared Spectroscopy of Borate Glasses with Effects of Different Additives

Abstract

Borate glasses are the technologically important class of glasses and play a significant role in various applications. Borate glasses contain planar BO3groups as structural units, rather than tetrahedral SiO4groups. The oxygen atoms are, as in SiO2, again connected to two network-forming atoms, in case of boron. The radial distribution analysis describes the B2O3glass structure as consisting of boroxol rings, that is, planar rings containing three boron atoms and three oxygen atoms. The network forming of the B2O3and the SiO4is affected with the addition of some metal cation additives Pb, Zn, Cd, and so forth. These additives also work as a network modifier and a nucleating agent for crystallization of glass. Therefore, the optical properties of the borate glasses have been changed significantly.