Ceramics with the general formula, Bi4V2(1-x)M2xO11-3x, were synthesized by using the polymeric precursor method. An analysis of X-ray diffraction patterns revealed that the Bi4Ti0.2V1.8O10.7 phase was formed by heat-treating the composition at 650C for 3h. Polycrystalline samples with a relative density of 98% were obtained by sintering at 880C for 8h. The ionic conductivity of the compact was characterized by means of impedance spectroscopy. The ionic conductivity was calculated to be 1.48 x 10-3S/cm at 473K; with a carrier activation energy of 0.76eV. The conductivity was higher than that of materials prepared by using traditional non-chemical methods.

Ionic Conductivity of Bi4Ti0.2V1.8O10.7 Polycrystalline Ceramics Obtained by the Polymeric Precursor Route. M.J.Godinho, P.R.Bueno, M.O.Orlandi, E.R.Leite, E.Longo: Materials Letters, 2003, 57[16-17], 2540-4