Coexistence of ferroelectric vortex domains and charged domain walls in epitaxial BiFeO3 film on (110)O GdScO3 substrate

摘要

The occurrence of ferroelectric charged domain walls (CDWs) which was thought to be energetically unstable is observed, together with a ferroelectric vortex structure composed of 109° and 180° domains near an epitaxial BiFeO3/GdScO3 interface. The CDW and vortex affect the domain arrangement, domain configuration, and hence tune the domain size distribution.