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Young-Min Kim, Amit Kumar, Alison Hatt, Anna N. Morozovska, Alexander Tselev, Michael D. Biegalski, Ilya Ivanov, Eugene A. Eliseev, Stephen J. Pennycook, James M. Rondinelli, Sergei V. Kalinin and Albina Y. Borisevich Interplay of Octahedral Tilts and Polar Order in BiFeO3 Films Advanced Materials 25

Version of Record online: 18 MAR 2013 | DOI: 10.1002/adma.201204584

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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.

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