Nanoscale domains in strained epitaxial BiFeO3 thin Films on LaSrAlO4 Substrate

Abstract

BiFeO3 thin films with various thicknesses were grown epitaxially on (001) LaSrAlO4 single crystal substrates using pulsed laser deposition. High resolution x-ray diffraction measurements revealed that a tetragonal-like phase with c-lattice constant ~4.65 Å is stabilized by a large misfit strain. Besides, a rhombohedral-like phase with c-lattice constant ~3.99 Å was also detected at film thickness of ~50 nm and above to relieve large misfit strains. In-plane piezoelectric force microscopy studies showed clear signals and self-assembled nanoscale stripe domain structure for the tetragonal-like regions. These findings suggest a complex picture of nanoscale domain patterns in BiFeO3 thin films subjected to large compressive strains.

arXiv comment14 pages, 4 figures

References in corpus (3)

• Effect of epitaxial strain on the spontaneous polarization of thin film ferroelectrics
• Fractal dimension and size scaling of domains in thin films of multiferroic BiFeO3
• Strain-induced isosymmetric phase transition in BiFeO3

Cited by in corpus (12)

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• Antiferromagnetic transitions in `T-like' BiFeO3
• Study of strain effect on in-plane polarization in epitaxial BiFeO3 thin films using planar electrodes
• Spatially resolved studies of the phases and morphology of methylammonium and formamidinium lead tri-halide perovskites
• Large tensile strain induced monoclinic MB phase in BiFeO3 epitaxial thin films on PrScO3 substrate
• Anisotropic optical properties of rhombohedral and tetragonal thin film BiFeO${}_3$ phases
• Periodic elastic nanodomains in ultrathin tetrogonal-like BiFeO3 films
• Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates
• Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films