Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4

Naoshi Ikeda, Masahiko Tanaka, Hijiri Kitô, Satoshi Sasaki, Yasusada Yamada

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

We report a synchrotron orbital radiation study of a charge ordering in a triangular mixed valence system LuFe2O4. Using the X-ray anomalous dispersion method near the iron K-shell absorption edge, we confirmed a superstructure of Fe2+ and Fe3+ on the triangular lattice with a configuration of a √3 × √3 × 2 structure. This charge structure shows a spontaneous polarization. The existence of two dimensional charge ordering above 330K was deduced from the temperature dependence of the energy dispersion for the superlattice reflection.

Original languageEnglish
Title of host publicationFerroelectrics
Pages227-235
Number of pages9
Volume222
Edition1-4
Publication statusPublished - 1999
Externally publishedYes

Fingerprint

Synchrotrons
synchrotrons
Polarization
polarization
Iron
valence
Radiation
iron
X rays
orbitals
temperature dependence
radiation
configurations
x rays
Temperature
energy

Keywords

  • Anomalous X-ray dispersion
  • Charge frustration
  • Charge order
  • LuFeO
  • RFeO
  • SOR experiment

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ikeda, N., Tanaka, M., Kitô, H., Sasaki, S., & Yamada, Y. (1999). Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4. In Ferroelectrics (1-4 ed., Vol. 222, pp. 227-235)

Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4. / Ikeda, Naoshi; Tanaka, Masahiko; Kitô, Hijiri; Sasaki, Satoshi; Yamada, Yasusada.

Ferroelectrics. Vol. 222 1-4. ed. 1999. p. 227-235.

Research output: Chapter in Book/Report/Conference proceedingChapter

Ikeda, N, Tanaka, M, Kitô, H, Sasaki, S & Yamada, Y 1999, Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4. in Ferroelectrics. 1-4 edn, vol. 222, pp. 227-235.
Ikeda N, Tanaka M, Kitô H, Sasaki S, Yamada Y. Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4. In Ferroelectrics. 1-4 ed. Vol. 222. 1999. p. 227-235
Ikeda, Naoshi ; Tanaka, Masahiko ; Kitô, Hijiri ; Sasaki, Satoshi ; Yamada, Yasusada. / Synchrotron observation of the charge ordering and spontaneous polarization in LuFe2O4. Ferroelectrics. Vol. 222 1-4. ed. 1999. pp. 227-235
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