S. Rossignol et al., IONIC-CONDUCTIVITY AND STRUCTURE OF THALLIUM TELLURITE GLASSES CONTAINING AGI, Journal of non-crystalline solids, 162(3), 1993, pp. 244-252
The ionic conductivities of [TeO2: RTlO0.5](1-x)[AgI](x) glasses have
been determined and compared with those of compositions [TeO2: RAgO0.5
](1-x)[AgI](x). The conductivity increases when x(AgI) increases, but
lower conductivities are observed for glasses based on thallium tellur
ite than for those based on silver tellurite. It is concluded from the
conductivity variation with the glass composition that the ionic cond
uctivity properties are bound essentially to the mobility of the Ag+ i
ons located in an iodide environment. The IR and Raman spectra of tern
ary [TeO2: RTlO0.5](1-x)[AgI](x) glasses show only small modifications
of the tellurite network, irrespective of the amount of AgI introduce
d into the binary glasses. The existence of intermediate-range order i
n these materials is discussed.