Sodium-Poor, Hydroxyl-Rich, Defective Na₂Ti₃O₇ Prepared by γ-Irradiation and Its Enhanced Proton Conductivity

Abstract

is 1 order of magnitude larger than that in the nonirradiated sample; the relaxation time decreases from 30 to 2-6 μs with γ-irradiation. The γ-dose dependence of dielectric loss is also present and analyzed using the Jonscher universal power law, indicating the low-frequency dispersion behavior characteristics of high charge densities.