Dynamics of multiferroic domain wall in spin-cycloidal ferroelectric DyMnO3

F. Kagawa, Masahito Mochizuki, Y. Onose, H. Murakawa, Y. Kaneko, N. Furukawa, Y. Tokura

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We report the dielectric dispersion of the giant magnetocapacitance (GMC) in multiferroic DyMnO3 over a wide frequency range. The GMC is found to be attributable not to the softened electromagnon but to the electric-field-driven motion of multiferroic domain wall (DW). In contrast to conventional ferroelectric DWs, the present multiferroic DW motion holds an extremely high relaxation rate of ∼107s-1 even at low temperatures. This mobile nature as well as the model simulation suggests that the multiferroic DW is not atomically thin as in ferroelectrics but thick, reflecting its magnetic origin.

Original languageEnglish
Article number057604
JournalPhysical Review Letters
Issue number5
Publication statusPublished - 2009 Feb 2
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kagawa, F., Mochizuki, M., Onose, Y., Murakawa, H., Kaneko, Y., Furukawa, N., & Tokura, Y. (2009). Dynamics of multiferroic domain wall in spin-cycloidal ferroelectric DyMnO3. Physical Review Letters, 102(5), [057604]. https://doi.org/10.1103/PhysRevLett.102.057604