Publication Date:
2014-11-18
Description:
Surface double-layer structure different from the interior was found in BiFeO 3 thin film grown on SrRuO 3 covered SrTiO 3 (110) substrate by pulsed laser deposition. It was shown that BiFeO 3 film exhibits epitaxial phase with single domain. X-ray reflectivity and X-ray photoelectron spectroscopy results revealed a skin layer of less than 1 nm with a reduced electron density and different surface state. Grazing incidence x-ray diffraction convinced a surface multi-domain structure of several nm beneath the surface skin layer. The double-layer near surface structure would be originated from the large depolarization field produced by the single-domain structure with strain.
Print ISSN:
0003-6951
Electronic ISSN:
1077-3118
Topics:
Physics
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