Interplay of Octahedral Tilts and Polar Order in BiFeO3 Films

Interplay of Octahedral Tilts and Polar Order in BiFeO3 Films

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...

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Veröffentlicht in:Advanced materials (Weinheim) 2013-05, Vol.25 (17), p.2497-2504
Hauptverfasser: Kim, Young-Min, Kumar, Amit, Hatt, Alison, Morozovska, Anna N., Tselev, Alexander, Biegalski, Michael D., Ivanov, Ilya, Eliseev, Eugene A., Pennycook, Stephen J., Rondinelli, James M., Kalinin, Sergei V., Borisevich, Albina Y.
Format: Artikel
Sprache:eng
Schlagworte:
BiFeO3
Bismuth - chemistry
Calcium Compounds - chemistry
Ferric Compounds - chemistry
Materials Testing
Membranes, Artificial
Molecular Conformation
multiferroics
Oxides - chemistry
piezoresponse force microscopy
scanning transmission electron microscopy
Titanium - chemistry
transition metal oxides
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Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201204584