Electronic Conductivity of CeO[sub 2]: Its Dependence on Oxygen Partial Pressure and Temperature

The electronic conductivity of pure ceria was successfully measured by a dc polarization technique based on the Hebb–Wagner ion blocking method at . The electronic conductivity increased with increasing temperature at given values. It also increased with decreasing following slope values of −1/6 to −1/4. At 873–1073 K, no dependent region was observed at higher more than , , and at 1073, 973, and 873 K, respectively. Activation energies calculated from the Arrhenius plots for those different regions were 2.2, 2.9, and 1.9 eV for dependences of −1/6, −1/4, and 0 regions, respectively.