Multiferroic phase transition near room temperature in BiFeO3 films

Abstract

In multiferroic BiFeO3 thin films grown on highly mismatched LaAlO3 substrates, we reveal the coexistence of two differently distorted polymorphs that leads to striking features in the temperature dependence of the structural and multiferroic properties. Notably, the highly distorted phase quasi-concomitantly presents an abrupt structural change, transforms from a hard to a soft ferroelectric and transitions from antiferromagnetic to paramagnetic at 360+/-20 K. These coupled ferroic transitions just above room temperature hold promises of giant piezoelectric, magnetoelectric and piezomagnetic responses, with potential in many applications fields.

References in corpus (4)

• Stress-induced R-MA-MC-T symmetry changes in BiFeO3 films
• First-principles investigation of morphotropic transitions and phase-change functional responses in BiFeO3-BiCoO3 multiferroic solid solutions
• Phase transition close to room temperature in BiFeO3 thin films
• Temperature Driven Structural Phase Transition in Tetragonal-Like BiFeO3

Cited by in corpus (17)

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• Antiferromagnetic transitions in `T-like' BiFeO3
• Phase transition close to room temperature in BiFeO3 thin films
• Temperature Driven Structural Phase Transition in Tetragonal-Like BiFeO3
• Strain engineering magnetic frustration in perovskite oxide thin films
• Structural study in Highly Compressed BiFeO3 Epitaxial Thin Films on YAlO3
• Controllable Defect Driven Symmetry Change and Domain Structure Evolution in BiFeO3 with Enhanced Tetragonality
• Bismuth-based perovskites as multiferroics
• Periodic elastic nanodomains in ultrathin tetrogonal-like BiFeO3 films
• Giant Thermal Enhancement of the Electric Polarization in Ferrimagnetic BiFe${}_{1-x}$Co${}_x$O${}_3$ Solid Solutions Near Room Temperature
• On the magnetoelastic and magnetoelectric couplings across the antiferromagnetic transition in multiferroic BiFeO3
• Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates
• Temperature-driven evolution of hierarchical nanodomain structure in tetragonal-like BiFeO3 films
• Strain accommodation through facet matching in La${}_{\text{1.85}}$Sr${}_{\text{0.15}}$CuO${}_{\text{4}}$/Nd${}_{\text{1.85}}$Ce${}_{\text{0.15}}$CuO${}_{\text{4}}$ ramp-edge junctions
• Built-in electric field induces polarization rotation in bilayer BiFeO3/(Ba,Sr)TiO3 thin films
• High-Curie-temperature ferrimagnetism and ferroelectricity in Bi2FeMoO6