Oxygen ionic conductivity in deformed YSZ single crystals

Abstract

YSZ single crystals were compressed at 1300°C to introduce the aligned dislocations. The electric conductivity of the deformed YSZ single crystals was measured using the AC impedance measurement. In this case, we set up two current directions to investigate the anisotropic conductivity of the deformed samples. One direction was parallel to the dislocation lines, the other was perpendicular to dislocation lines. The conductivities of deformed samples were higher than that of undeformed samples in both current directions. Plastic deformation enhanced the conductivity independent on the dislocation lines alignment and the crystallographic orientation.