The transport of Ag ions in a 60AgI-(30-x)Ag2O-xPbO-10B2O3 glass system was studied by means of X-ray diffraction, differential scanning calorimetry, polarization methods, complex impedance spectroscopic transient ionic current measurements, and optical microscopy. Glass formation was limited to x-values of less than 6mol%. The addition of PbO modified the conductivity, due to an increase in the ionic mobility and a decrease in the charge carrier concentration following the formation of more non-bridging O-containing functional groups. On the basis of the temperature dependence of the conductivity and the ionic mobility, a decrease in the charge carrier concentration was deduced. In order to explain this, 2 possible types of ion-association mechanism were proposed. These were self-association and network association.

L.Kumar, K.M.Shaju, S.Chandra: Canadian Journal of Physics, 1995, 73[5-6], 369-75