Co-L 3 X-ray absorption near-edge structure analysis of Pr 1-xCa xCoO 3-δ and Pr 1-xSr xCoO 3-δ

Tsuyoshi Yoshioka, Tomoyuki Yamamoto, Akihiko Kitada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The valence state of Co ions in Pr 1-xCa xCoO 3-δ and Pr 1-xSr xCoO 3-δ has been investigated by an analysis of the Co-L 3 X-ray absorption near-edge structure (XANES) profile. The observed intensity distributions of Co-L 3 XANES change continuously with increasing concentration of alkaline-earth ions. To investigate the origin of this change in the XANES profile, charge transfer multiplet calculations were carried out, which could successfully explain the change in the spectral profile; they also suggest that the valence state of Co ions in Pr 1-xCa xCoO 3-δ and Pr 1-xSr xCoO 3-δ is between 3 and 4 and increases gradually with the concentration of alkaline-earth ions.

Original languageEnglish
Pages (from-to)4114-4116
Number of pages3
JournalPhysica B: Condensed Matter
Volume407
Issue number21
DOIs
Publication statusPublished - 2012 Nov 1

Keywords

  • Charge transfer multiplet calculation
  • Praseodymium cobaltate
  • Valence state
  • X-ray absorption near-edge structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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