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Updated: May 21, 2026

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
Polarization dependent chemistry of ferroelectric BaTiO3(001) domains
Yanyu Mi1, Gregory Geneste, Julien E Rault
1IRAMIS/SPCSI/LENSIS, F- 91191 Gif sur Yvette cedex, France.
Abstract:
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 BaTiO(3)(001) preferentially stabilizes an inward pointing, P-, polarization. Mirror electron microscopy measurements of the domain ordering confirm the theoretical results.
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