Abstract
The changes of glass structure and optical absorption of Mn^<3+>, Cu^<2+>, Ni^<2+> and Co^<2+> ions in industrial soda-lime-silica glasses were studied. The glasses containing 11-19 mol% Na_2O were melted under air atmosphere in an electric furnace at 1450 ℃ for 8 h. Glass composition, properties, structure changes and optical absorption were investigated. The results showed that increasing Na_2O content caused the highly basic of glasses. As well as the degree of disconnectivity in the network, the molar polarizability of oxide (-II) species were slightly increased. The optical densities of each transition ions such as Mn^<3+>, Cu^<2+>, Ni^<2+> and Co^<2+> ions were increased at constant wavelength when the structures of glass were disconnected.
