title: Interplay of octahedral tilts and polar order in BiFeO3 films.
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.
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
authors.forename: Young-Min
authors.initials: YM
authors.lastname: Kim
authors.forename: Amit
authors.initials: A
authors.lastname: Kumar
authors.forename: Alison
authors.initials: A
authors.lastname: Hatt
authors.forename: Anna N
authors.initials: AN
authors.lastname: Morozovska
authors.forename: Alexander
authors.initials: A
authors.lastname: Tselev
authors.forename: Michael D
authors.initials: MD
authors.lastname: Biegalski
authors.forename: Ilya
authors.initials: I
authors.lastname: Ivanov
authors.forename: Eugene A
authors.initials: EA
authors.lastname: Eliseev
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Pennycook
authors.forename: James M
authors.initials: JM
authors.lastname: Rondinelli
authors.forename: Sergei V
authors.initials: SV
authors.lastname: Kalinin
authors.forename: Albina Y
authors.initials: AY
authors.lastname: Borisevich
mesh_terms: D001729:Bismuth / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D005290:Ferric Compounds; D008567:Membranes, Artificial; D010087:Oxides; C059910:perovskite; C000499:ferric oxide; C033301:bismuth oxide; D014025:Titanium; D001729:Bismuth