On the other hand, La2O3 containing glass as shown in Fig. 8(b), a special band centered appears at 1120–1320 cm−1 which is due to boroxol rings and borate stretching [21]. Apart from this, the lower wave number band (500–1000 cm−1) in glass ceramics becomes sharper and split indicating that crystalline phase is formed. Similar phenomenon was also reported by Elbatal and Khalil [21].