期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 24, 期 27, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/24/27/275901
关键词
-
资金
- CEA Nanoscience programme
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.
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