Many applications of ferroic materials, such as data storage and spintronics, are achieved through the control and manipulation of their domain wall (DW) orientations and configurations. Here we propose a rotational compatibility condition to identify low-energy DWs in perovskites with oxygen octahedral tilt instability. It is derived from the strong DW energy anisotropy arising from the rigidity and corner-sharing feature of the octahedral network. We analyze quantitatively the DWs in SrTiO3 and explain successfully the unusual ferroelectric DW width and energy in BiFeO3.
F. Xue et al., "Orientations of Low-Energy Domain Walls in Perovskites with Oxygen Octahedral Tilts," Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 22, American Physical Society (APS), Dec 2014.
The definitive version is available at https://doi.org/10.1103/PhysRevB.90.220101
Materials Science and Engineering
Keywords and Phrases
Ferroelectric materials; Ferroelectricity; Ferroelectric tunnel
International Standard Serial Number (ISSN)
Article - Journal
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