Role of V2O5 in Structural Properties of V2O5-MnO2-PbO-B2O3 Glases

Glass samples of compositions xV₂O₅-(20-x) MnO₂-20PbO-60B₂O₃ with x varying from 0 to 15 % mole fraction are prepared by melt quench technique. The structural analysis of glasses is carried out by XRD, FTIR and density measurement techniques. The FTIR spectral studies have pointed out the conversion of structural units of BO₃ to BO₄ with the presence of VO₄ and VO₅ structural units of vanadium in these glasses. Due to the formation of BO₄ groups, an increase in density from 3.52 to 4.33 g·Їcm^-3 for MnO₂-PbO-B₂O₃ glasses is observed with an increase in V₂O₅ content.