Structural Order-Disorder and Ionic Conductivity of Novel Hexagonal Perovskite-Related Oxides

This thesis presents relationships between ionic conductivity and crystal structure of hexagonal perovskite revealed from a new perspective: order and disorder. It describes three state-of-art research results in the new area of structure of ionic conductors, hexagonal perovskite-related structures, based on a new viewpoint of structural order/disorder. The first is occupational disorder of oxygen...