Magnetic and dielectric behavior of TmFe2 O4 and TmFeCuO4

Kenji Yoshii, Naoshi Ikeda, Shigeo Mori

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

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
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - Mar 2007

Fingerprint

Oxides
Permittivity
permittivity
Ferroelectricity
oxides
ferroelectricity
Dielectric properties
Transition metals
Metal ions
Charge transfer
dielectric properties
metal ions
Magnetic properties
Iron
transition metals
charge transfer
magnetic properties
valence
iron
room temperature

Keywords

  • Antiferromagnetism
  • Ferroelectricity
  • Frustration
  • Iron oxide
  • Multiferroic

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Magnetic and dielectric behavior of TmFe2 O4 and TmFeCuO4. / Yoshii, Kenji; Ikeda, Naoshi; Mori, Shigeo.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 2, 03.2007, p. 1154-1156.

Research output: Contribution to journalArticle

Yoshii, Kenji ; Ikeda, Naoshi ; Mori, Shigeo. / Magnetic and dielectric behavior of TmFe2 O4 and TmFeCuO4. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 2. pp. 1154-1156.
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AB - 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.

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