Abstract
Abstract Mixed glass former effect has been investigated in AgI doped silver borophosphate glasses for the system 0.10AgI–0.90(0.50Ag 2 O–0.50(xB 2 O 3 –(1 − x)P 2 O 5 )). The network structure of these glasses has been investigated by FTIR spectroscopy. It has been observed that the structural evolution of these glasses with increase of B 2 O 3 content is not similar to that of undoped silver borophosphate glasses. The addition of AgI in silver borophosphate glasses affects the mixed glass former effect. FTIR spectra show that the phosphate glass network is continuously modified in the entire compositional range due to incorporation of B 2 O 3 . The network connectivity between the borate and phosphate network depends on the formation of P–O–B linkages and the concentration of three dimensionally connected P 3 and B 4 units. The compositional dependence of the glass transition temperature depends on network connectivity of the mixed glass formers. The electrical conductivity of these glasses depends on the distribution of different types of anionic site in the glass network.
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