Interplay of octahedral tilts and polar order in BiFeO3 films

Adv Mater. 2013 May 7;25(17):2497-504. doi: 10.1002/adma.201204584. Epub 2013 Mar 18.

Abstract

Heterointerface stabilization of a distinct nonpolar BiFeO3 phase occurs simultaneously with changes in octahedral tilts. The resulting phase arises via suppression of polarization by a structural order parameter and can thus be identified as anti-ferroelectric (Fe displacements - bottom panel). The phase is metastable and can be switched into a polar ferroelectric state (top panel) under an applied electric bias.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Bismuth / chemistry*
  • Calcium Compounds / chemistry*
  • Ferric Compounds / chemistry*
  • Materials Testing
  • Membranes, Artificial*
  • Molecular Conformation
  • Oxides / chemistry*
  • Titanium / chemistry*

Substances

  • Calcium Compounds
  • Ferric Compounds
  • Membranes, Artificial
  • Oxides
  • perovskite
  • ferric oxide
  • bismuth oxide
  • Titanium
  • Bismuth