title: Spectral studies on Cu2+ doped sodium leadbismuthate glasses.
abstract: Copper doped sodium leadbismuthate glasses were prepared in the chemical composition (wt.%) 35Bi2O3+35PbO+(30-x)Na2O+xCuO (where x=1, 2, 3 and 4). The optical spectra of the glasses have been investigated. The optical absorption spectra of Cu2+ doped glasses show a broad absorption band between 560 and 880 nm, which is attributed to the 2Eg-->2T2g transition of Cu2+ ion. FTIR spectral studies confirm the Bi-O bonds and the presence of [BiO3] pyramidal units.
authors.affiliation: Optics group, Raman Research Institute, C.V. Raman Avenue, Sadhasivanagar, Bangalore 580006, India. balkarin@yahoo.com
authors.forename: B
authors.initials: B
authors.lastname: Karthikeyan
mesh_terms: D001729:Bismuth / Q000032:analysis*; D002152:Calorimetry, Differential Scanning; D003300:Copper / Q000032:analysis*; D005898:Glass / Q000737:chemistry*; D007854:Lead / Q000032:analysis*; D012964:Sodium / Q000032:analysis*; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D007854:Lead; D003300:Copper; D012964:Sodium; D001729:Bismuth