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

doi:10.1016/j.physb.2012.06.029

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

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	4114-4116
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	407
Issue number	21
DOIs	https://doi.org/10.1016/j.physb.2012.06.029
Publication status	Published - 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

Access to Document

10.1016/j.physb.2012.06.029

Cite this

@article{43d13a02b4d441b88f0c89ffe4465f61,

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

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.",

keywords = "Charge transfer multiplet calculation, Praseodymium cobaltate, Valence state, X-ray absorption near-edge structure",

author = "Tsuyoshi Yoshioka and Tomoyuki Yamamoto and Akihiko Kitada",

year = "2012",

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day = "1",

doi = "10.1016/j.physb.2012.06.029",

language = "English",

volume = "407",

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journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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}

TY - JOUR

T1 - Co-L 3 X-ray absorption near-edge structure analysis of Pr 1-xCa xCoO 3-δ and Pr 1-xSr xCoO 3-δ

AU - Yoshioka, Tsuyoshi

AU - Yamamoto, Tomoyuki

AU - Kitada, Akihiko

PY - 2012/11/1

Y1 - 2012/11/1

N2 - 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.

AB - 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.

KW - Charge transfer multiplet calculation

KW - Praseodymium cobaltate

KW - Valence state

KW - X-ray absorption near-edge structure

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