Direct coupling of ferromagnetic moment and ferroelectric polarization in BiFeO${}_3$

Abstract

The spin-driven component of electric polarization in a single crystal of multiferroic BiFeO${}_3$ was experimentally investigated in pulsed high magnetic fields up to 41 T. Sequential measurements of electric polarization for various magnetic field directions provide clear evidence of electric polarization normal to the hexagonal $c$ axis (${\mathbf{P}}_{\mathrm{t}}$) in not only the cycloidal phase, but also the field-induced canted antiferromagnetic phase. The direction of ${\mathbf{P}}_{\mathrm{t}}$ is directly coupled with the ferromagnetic moment in the canted antiferromagnetic phase, and thus controlled by changing the direction of the applied magnetic field. This magnetoelectric coupling is reasonably reproduced by the metal-ligand hybridization model.

References in corpus (13)

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• Space-Time Parity Violation and Magnetoelectric Interactions in Antiferromagnets
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• Negative magnetostrictive magnetoelectric coupling of BiFeO3
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• Spin flexoelectricity and chiral spin structures in magnetic films
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• Pinning, Rotation, and Metastability of BiFeO${}_3$ Cycloidal Domains in a Magnetic Field

Cited by in corpus (6)

• Phenomenological description of bright domain walls in ferroelectric-antiferroelectric layered chalcogenides
• The Magnetoelastic Distortion of Multiferroic BiFeO${}_3$ in the Canted Antiferromagnetic State
• Effect of nano-size on magnetostriction of BiFeO3 and exceptional magnetoelectric coupling properties of BiFeO3_P(VDF-TrFE) polymer composite films for magnetic field sensor application
• Selection rules and dynamic magnetoelectric effect of the spin waves in multiferroic BiFeO${}_3$
• Melting of Spatially Modulated Phases in La-doped BiFeO3 at Surfaces and Surface-Domain Wall Junctions
• A Comprehensible Review: Magnonic Magnetoelectric Coupling in Ferroelectric/ Ferromagnetic Composites