Low temperature dielectric dispersion and electrical conductivity studies on Fe2O3 mixed lithium yttrium silicate glasses

► Glasses of the composition (40 − x) Li2O-10Y2O3-50SiO2: x Fe2O3, were synthesized. ► Electrical and dielectric properties over a wide frequency and temperature range were measured. ► The results were analyzed quantitatively with the support of data from IR, OA and ESR spectral studies. ► Overall analysis indicated that the glasses with > 0.5 mol% Fe2O3 posses good electrical properties.