Study Of Cuo And V2o5 Effect On Ir Spectra Of Polycrystalline Bismuth Niobate

Bismuth niobate (BiNbO4) ceramics were fabricated by mixed oxide method and sintered by presureless sintering method. BiNbO4 ceramics doped with V2O5 additive in amount 0.125 wt%, 0.250 wt% and 1 wt% of was sintered at T = 910 degrees C whereas BiNbO4 ceramics doped with 2 wt% of CuO additive was sintered at T = 890 degrees C and T = 910 degrees C. It was found that V2O5 additive unproved morphology of the ceramic samples. However, the chemical composition of BiNbO(4 )ceramics in relation to bismuth oxide and niobium oxide manifested a tendency of lack of Bi2O3 component. Absorption bands for the BiNbO4 compound were identified. FTIR band positions associated with NbO6 octahedra suggested that the crystal structure changes after V2O5 incorporation.