Resonant magnetoelectric X-ray scattering in GaFeO3: Observation of ordering of toroidal moments

Taka Hisa Arima, Jong Hoon Jung, Masakazu Matsubara, Masato Kubota, Jin Ping He, Yoshio Kaneko, Yoshinori Tokura

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

We report on the first observation of magnetoelectric X-ray scattering (MEXS), i.e., incident-k-direction-dependent scattering, for a polar ferrimagnet GaFeO3. Near the K edge of Fe, the magnetic component of the (040) X-ray reflection shows a larger enhancement than that of the (020) X-ray reflection, which cannot be attributed to the genuine magnetic scattering, but to the MEXS of Fe3+ ions. Toroidal moments as defined by the outer product of the Fe off-center displacement and the magnetic moment show ferroic ordering, which causes the resonant MEXS at the Fe 1s-3d excitation energy.

Original languageEnglish
Pages (from-to)1419-1422
Number of pages4
Journaljournal of the physical society of japan
Volume74
Issue number5
DOIs
Publication statusPublished - 2005 May 1

Keywords

  • Ferrimagnet
  • Ferrotoroidic
  • Magnetoelectric X-ray scattering
  • Magnetoelectric effect
  • Multiferroics
  • Nonreciprocal directional dichroism
  • Resonant X-ray scattering
  • Toroidal moment magnetic X-ray scattering
  • X-ray spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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