Physical and spectroscopic properties of PbO –ZnF2 – B2O3 glasses doped with CuO

Abstract

The glass samples with the chemical composition of PbO − ZnF2 − B2O3: CuO has been prepared by melt quenching technique. All the prepared glass samples exhibits amorphous nature, were confirmed by the X-ray diffraction studies. The density of the glass samples were measured by using Archimedes’ principle. With help of measured densities various physical properties such as average molecular weight (M¯), molar volume, Interatomic distance(ri), dopant ion concentrations (Ni) were calculated by using standard formulas. Optical Absorption spectra studies reveals that the glass samples contains Cu ions exhibits a broad absorption band at about 780 nm due to 2B1g→2B2g transition.The spectra of Infrared transmission show prominent bands at wave numbers around 1200 to 1400 cm−1, which are caused by the trigonal BO3 units, at 1000 and 1200 cm-1which are caused by vibrations of BO4 structural units, and at about 700 cm−1 which are caused by B-O-B linkages.