Ferroelectricity from valence ordering in RFe2O4

Naoshi Ikeda, Shigeo Mori, Kenji Yoshii

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


We report a polar ordering of electrons in RFe2O4, which consistently explains the ferroelectric property of this material. Pyroelectric current measurement, low frequency AC dielectric constants, resonant X-ray scattering diffraction experiment and the consideration for the charge frustration, consistently lead the presence of ferroelectricity originated from the ordering of Fe3+ and Fe2+. The ferroelectric material originated from the polar electron distribution and free from the ionic displacement may potentially have great possibilities in future applications and fundamental researches.

Original languageEnglish
Pages (from-to)38-47
Number of pages10
Publication statusPublished - 2007
Event8th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity, RCBJSF-8 - Tsukuba, Japan
Duration: May 15 2006May 19 2006


  • Charge frustration
  • Charge ordering
  • Dielectric dispersion
  • Frustrated system
  • RFeO
  • Spontaneous polarization
  • Triangular lattice
  • Verwey transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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