Atomic structure of antiphase nanodomains in Fe-doped SrTiO3 films

October 2015

by Hongchu Du, Chun-Lin Jia, Joachim Mayer, Juri Barthel, Christian Lenser, and Regina Dittmann

The atomic structure of antiphase nanodomains in Fe-doped SrTiO3 films has been revealed directly by aberration-corrected scanning transmission electron microscopy. In particular, the crystallographic translation vector between the antiphase nanodomains and the matrix has been determined to be a/2 [011], distinct from a/2 [111] for the well-known Ruddlesden Popper planar faults in perovskite structures. The antiphase boundaries have been found to lie mostly in the (100) planes and partially in the (110) planes. The atomic structure of the antiphase boundaries have been found to consist of chains of edge-sharing TiO6 octahedra implying a local Ti-enrichment, which is in strong contrast to local Sr-enrichment at the Ruddlesden Popper type antiphase boundaries..

Further reading:

Hongchu Du, Chun-Lin Jia, Joachim Mayer, Juri Barthel, Christian Lenser, and Regina Dittmann: Atomic structure of antiphase nanodomains in Fe-doped SrTiO3 films,