Polarization dependent chemistry of ferroelectric BaTiO3(001) domains
| Autor: | Julien E. Rault, Yanyu Mi, Grégory Geneste, Claire Mathieu, Nicholas Barrett, A. Pancotti |
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| Rok vydání: | 2012 |
| Předmět: |
Field (physics)
Surface Properties Barium Compounds Molecular Conformation chemistry.chemical_element FOS: Physical sciences Oxygen law.invention Electron Transport law Physics - Chemical Physics Materials Testing General Materials Science Polarization dependent Polarization (electrochemistry) Chemical Physics (physics.chem-ph) Titanium Condensed Matter - Materials Science Condensed matter physics Electric Conductivity Materials Science (cond-mat.mtrl-sci) Models Theoretical Condensed Matter Physics Ferroelectricity chemistry Domain (ring theory) Electron microscope |
| Zdroj: | Journal of physics. Condensed matter : an Institute of Physics journal. 24(27) |
| ISSN: | 1361-648X |
| Popis: | Recent works suggest that the surface chemistry, in particular, the presence of oxygen vacancies can affect the polarization in a ferroelectric material. This should, in turn, influence the domain ordering driven by the need to screen the depolarizing field. Here we show using density functional theory that the presence of oxygen vacancies at the surface of BaTiO3 (001) preferentially stabilizes an inward pointing, P-, polarization. Mirror electron microscopy measurements of the domain ordering confirm the theoretical results. Comment: 11 pages, 6 figures |
| Databáze: | OpenAIRE |
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