An Alternative Explanation for the Origin of the Resistivity Anomaly in La‐Doped BaTiO ₃

Abstract

Semiconductivity in La‐doped BaTiO 3 ceramics after high‐temperature firing, e.g., 1350°C in air, is attributed to oxygen nonstoichiometry. In more heavily doped compositions, the observed resistivity rise is attributed to surface oxidation of the grains during cooling.