Infrared Absorption Study of Potassium-Boro-Vanadate-Iron Glasses

Authors : Dinesh K KANCHAN, Harshvadan R PANCHAL

Pages : 989-996

View : 16 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The IR studies have been made in the K2O-B2O3-V2O5-Fe2O3 glass system. The increase in intensity and shifting of vibrational bands towards lower wave number at 1400-1350 cm-1, 1200 cm-1 and 100-940 cm-1 in IR spectra have been ascribed to the formation of BO3 to BO4 and VO5 to VO4 tetrahedra along with the formation of non-bridging oxygens attached to boron and vanadium. In heat-treated glass samples, many new vibrational bands have been observed which were however, absent in the untreated samples. The preservation of the 1020 cm-1 band assigned to V=O bond suggests that K2O shows the preference for borate network upto 20 mole % and is responsible for bringing the changes in borate and vanadate networks. At higher amount of K2O, the presence of both BO4 and VO4 groups facilitates the formation of homogeneous solid solution of the present glass system.
Keywords : Turk J Phys, 22, 1998, 989 996 Turk J Phys, vol 22, iss 10