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Polarization dependent chemistry of ferroelectric BaTiO3 (001) domains

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 نشر من قبل Julien E Rault
 تاريخ النشر 2018
  مجال البحث فيزياء
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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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