Temperature and polarization dependence of Fe L3-edge X-ray absorption spectra of LuFe2O4

A. Agui, M. Mizumaki, T. Kuroda, M. Kawai, T. Nagata, N. Ikeda, T. Uozumi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The charge ordering of Fe2+ and Fe3+ ions in LuFe2O4 induces ferroelectricity below 330 K. In this study, the X-ray absorption spectra (XAS) at the Fe L2,3-edge are investigated to study charge ordered- and disordered-states. The polarization dependence of XAS revealed that the energy level of (dxy, dx2-y2) is lower than that of (dyz, dzx). In the charge-ordered state, the Fe L3-XAS shows a double-peak structure, which is a characteristic of Fe2+ and Fe3+ ions. In the high-temperature region, the double-peak structure becomes a broad single peak, because of overlap with the thermally excited state.

Original languageEnglish
Pages (from-to)13-16
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume197
DOIs
Publication statusPublished - Dec 2014

Keywords

  • Charge order
  • LuFeO
  • Soft X-ray spectroscopy
  • Temperature dependence
  • X-ray absorption

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Temperature and polarization dependence of Fe L<sub>3</sub>-edge X-ray absorption spectra of LuFe<sub>2</sub>O<sub>4</sub>'. Together they form a unique fingerprint.

Cite this