Schematic diagram of structural change in terms of octahedral distortion, hollow inscribed sphere, and its surrounding eight octahedra. (a) Perovskite oxide as the tolerance factor decreases from approximately 1, (b) the SRO100 film, and (c) the SRO111 film with bulk SRO. The Ru nn-distance in the film depended critically on the type of substrate orientation.
Lee et al. Nanoscale Research Letters 2014 9:8 doi:10.1186/1556-276X-9-8