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. 2017 Jan 25;7:41301. doi: 10.1038/srep41301

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Copyright © 2017, The Author(s)

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Polarization-switching pathway in the presence of a vacancy: (a) the initial configuration with an asymmetric structure, where B₁ and B₂ are B-site atoms, the dash lines indicate the centrosymmetric planes of the bulk 5-atoms cell for these two atoms, and is the vacancy. Polarization is along the B₁-B₂ direction. (b) Polarization switching in which B-site atoms do not cross the centrosymmetric positions. Empty circles indicate initial positions and solid circles the final positions.

Inline graphic — Polarization-switching pathway in the presence of a vacancy: (a) the initial configuration with an asymmetric structure, where B₁ and B₂ are B-site atoms, the dash lines indicate the centrosymmetric planes of the bulk 5-atoms cell for these two atoms, and is the vacancy. Polarization is along the B₁-B₂ direction. (b) Polarization switching in which B-site atoms do not cross the centrosymmetric positions. Empty circles indicate initial positions and solid circles the final positions.