Charge ordering of LuFe2O4 observed by an anomalous X-ray dispersion

Naoshi Ikeda, Shinichiro Nohdo, Yasusada Yamada, Eri Takahashi, Kay Kohn

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We observed a superlattice reflection for triangular layered oxide LuFe2O4 by using anomalous X-ray dispersion with synchrotron radiation source. We found that superlattice spot (1/3, 1/3, 4.5) shows a large intensity variation upon a slight change of incident X-ray energy (wave length) from 7.114 keV (1.7437 Å) to 7.1448 keV (1.7353 Å) across the Fe absorption edge. This phenomenon is explained by superlattice structure of Fe2+ and Fe3+ on triangular lattice. The existence of the superlattice structure due to the charge ordering of iron ions on triangular lattice indicates that LuFe2O4 possesses local spontaneous polarization.

Original languageEnglish
Pages (from-to)S165-S168
JournalJournal of the Korean Physical Society
Volume32
Issue numberSUPPL. 1
Publication statusPublished - Feb 1998
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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