“…Extensive studies have been reported on the structural aspects of borosilicate glasses using techniques like 29 Si, 11 B, 17 O magic angle spinning nuclear magnetic resonance (MAS NMR), Raman and IR spectroscopy [3][4][5][6][7][8][9][10][11]. Based on these studies, the existence of structural units like trigonally coordinated boron (BO 3 ), tetrahedrally coordinated boron (BO 4 ), silicon atoms with 3 and 4 bridging oxygen atoms, (Q 3 and Q 4 : where Q n represents silicon structural units having n-number of bridging oxygen atoms), Q n units with Si-O-B linkages etc., have been well established [3][4][5][6][7][8][9][10][11]. The addition of network modifiers (alkali/alkaline earth metal oxides) to borosilicate and borate glasses results in the initial conversion of BO 3 to BO 4 structural units.…”