Magnetic and dielectric behavior of TmFe2 O4 and TmFeCuO4

Kenji Yoshii, Naoshi Ikeda, Shigeo Mori

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The magnetic and dielectric properties are investigated for TmFe2 O4 and TmFeCuO4. The properties of TmFe2 O4, which shows the ferroelectricity from iron-valence ordering, are essentially the same as those of the other RFe2 O4 oxides, i.e., ferrimagnetic ordering at around 250 K and dielectric constants larger than 3000 at around room temperature. On the other hand, the Cu-substituted oxide TmFeCuO4 shows no magnetic transition and considerably smaller dielectric constants. The change of the properties is likely attributable to a reduction of a charge transfer between the transition-metal ions.

Original languageEnglish
Pages (from-to)1154-1156
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Issue number2 SUPPL. PART 2
Publication statusPublished - Mar 2007


  • Antiferromagnetism
  • Ferroelectricity
  • Frustration
  • Iron oxide
  • Multiferroic

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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