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ABSTRACT
Electric field distribution during polarization reversal in planar geometry is studied in BaSrTiO3 epitaxial films experimentally and numerically. Regularly perforated film forms two-dimensional photonic crystal, in which polarization can be reversed using interdigital electrode system. Dimensions of the system: electrode and gap width and hole depth (all of 1–2 μm) together with the electrode thickness (300 nm) reduce the spatial resolution of the used electric-force microscopy but allow nevertheless to monitor the numerically predicted sharp increase of electric field at the edges of electrode and at the holes.
Acknowledgments
The work is supported by Russian Foundation for Basic Research (Grant #13-02-12450 and research project No. 16-32-60188 mol_a_dk), Ministry of Education and Science of RF (State tasks 11.144.2014/K and “Organization of Research”) and (FCT UID/CTM /50011/2013). This work has been performed on the equipment of Center for collective use “Electronics” (MIREA). Part of the work implemented by A.L. Kholkin was supported by the project CICECO-Aveiro Institute of Materials (FCT ID/CTM/50011/2013).