IR analysis of borate glasses containing three alkali oxides

FTIR investigations on borate glasses containing three alkali oxides, 8, 10, 12, 14, and 16 mol%) 25, 30, 35, 40, and 50 mol%), and 8, 10, 12, 14, and 16 mol%) are reported. The present glasses contain mainly BO 3 and BO 4 structural units. The presence of fingerprints of both BiO 3 and BiO 6 structural units in bismuth alkali borate glasses was confirmed. The presence of varied types like di, tetra, penta, and ortho borate groups are confirmed in the glass matrix. Glasses with low PbO content contained more BO 3 units than BO 4 units.