Temperature Driven Structural Phase Transition in Tetragonal-Like BiFeO3

Abstract

Highly-strained BiFeO3 exhibits a "tetragonal-like, monoclinic" crystal structure found only in epitaxial films (with an out-of-plane lattice parameter exceeding the in-plane value by >20%). Previous work has shown that this phase is properly described as a M${}_C$ monoclinic structure at room temperature [with a (010)${}_{pc}$ symmetry plane, which contains the ferroelectric polarization]. Here we show detailed temperature-dependent x-ray diffraction data that evidence a structural phase transition at ~100C to a high-temperature M${}_A$ phase ["tetragonal-like" but with a (1-10)${}_{pc}$ symmetry plane]. These results indicate that the ferroelectric properties and domain structures of strained BiFeO${}_3$ will be strongly temperature dependent.

10 pages, 3 figures

References in corpus (4)

• Stress-induced R-MA-MC-T symmetry changes in BiFeO3 films
• Low-Symmetry Monoclinic Phases and Polarization Rotation Path Mediated By Epitaxial Strain in Multiferroic BiFeO3 Thin Films
• Effect of epitaxial strain on ferroelectric polarization in multiferroic BiFeO3 films
• Multiferroic phase transition near room temperature in BiFeO3 films

Cited by in corpus (9)

• A multiferroic on the brink: uncovering the nuances of strain-induced transitions in BiFeO${}_3$
• Multiple high-pressure phase transitions in BiFeO3
• Multiferroic phase transition near room temperature in BiFeO3 films
• Antiferromagnetic transitions in `T-like' BiFeO3
• Periodic elastic nanodomains in ultrathin tetrogonal-like BiFeO3 films
• Bismuth-based perovskites as multiferroics
• Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates
• Unit cell orientation of tetragonal-like BiFeO${}_3$ thin films grown on highly miscut LaAlO${}_3$ substrates
• Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films