Interplay of octahedral tilts and polar order in BiFeO3 films

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, Albina Y. Borisevich

    Research output: Contribution to journalArticlepeer-review

    105 Scopus citations

    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.

    Original languageEnglish
    Pages (from-to)2497-2504
    Number of pages8
    JournalAdvanced Materials
    Volume25
    Issue number17
    DOIs
    StatePublished - May 7 2013

    Keywords

    • BiFeO
    • multiferroics
    • piezoresponse force microscopy
    • scanning transmission electron microscopy
    • transition metal oxides

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