Magnetic dispersion and anisotropy in multiferroic BiFeO3

Abstract

We have determined the full magnetic dispersion relations of multiferroic BiFeO3. In particular, two excitation gaps originating from magnetic anisotropies have been clearly observed. The direct observation of the gaps enables us to accurately determine the Dzyaloshinskii-Moriya (DM) interaction and the single ion anisotropy. The DM interaction supports a strong magneto-electric coupling in this compound.

5 pages, 5 figures

References in corpus (6)

• Spin current and magneto-electric effect in non-collinear magnets
• Very large spontaneous electric polarization in BiFeO3 single crystals at room temperature and its evolution under cycling fields
• Electric-field-induced spin-flop in BiFeO3 single crystals at room-temperature
• Optical coupling to spin waves in the cycloidal multiferroic BiFeO3
• Singe ferroelectric and chiral magnetic domain of single-crystalline BiFeO${}_3$ in an electric field
• Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering

Cited by in corpus (2)

• Temperature-Dependent Interplay of Dzyaloshinskii-Moriya Interaction and Single-Ion Anisotropy in Multiferroic BiFeO${}_3$
• Exact treatment of magnetism-driven ferroelectricity in the one-dimensional compass model