Impact of ZnO on the Physical and Optical Properties of PbO-B2O3 Glasses |
J. Singha, G.P. Singha, P. Kaura, T. Singha, S. Bhatiaa, R. Kaurb, D.P. Singhc
aP.G. Department of Physics, Khalsa College, Amritsar 143002, India bP.G. Department of Physics, Lyallpur Khalsa College, Jalandhar 144001, India cDepartment of Physics, Guru Nanak Dev University, Amritsar 143005, India |
Full Text PDF |
The structure of the xZnO-30PbO-(70-x)B2O3 (x=5-20 mol%) glass system is investigated by analysing the physical parameters like molar volume and density. An increase in density (5.31-5.7 g/cm3) and consistent decrease in molar volume (20.95-20.03 cm3/mol) of glass samples is observed with the rise in ZnO content. The X-ray diffraction pattern confirms the amorphous nature of glass samples. The ultraviolet-visible spectroscopy technique is utilized to detect changes in optical parameters, like optical band gap and refractive index. The results depicted a reduction in optical band gap (2.63-2.41 eV) with an increase in ZnO content. Other parameters, such as oxygen packing density, ionic behaviour and average boron-boron separation of prepared glasses, have also shown a variation with a change in ZnO content. Infrared Spectroscopy measurements confirm the change of borate coordination from trigonal BO3 to tetrahedral BO4. |
DOI:10.12693/APhysPolA.142.195 topics: glasses, band gap, density, molar volume |