Spectroscopic studies of Cu2+ in xPbO-(100-x) B2O3 non-linear optical glass system

The preparation and spectroscopic studies of Cu2+ in xPbO-(100-x) B2O3 non-linear optical glassy system have been studied. From IR studies, it is observed at low concentration of PbO (less than 40 mole%), it acts as a glass modifier. At higher concentration, it takes part in the network. The hyperfine splitting in the parallel features of ESR spectra of Cu2+ are recorded for all concentration of PbO. There are considerable changes in g(parallel to) and A(parallel to) values with the increasing concentration of PbO, where as no perceptible changes is observed in g(perpendicular to) & A(perpendicular to) values. These changes clearly indicate a structural change in the glass system. The observed absorption peak of Cu2+ found to go through a maximum at 40-mole% of PbO. The bonding parameters calculated from both optical and ESR data are found to change with PbO concentration.