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

    Fingerprint

    X ray absorption
    Ions
    ions
    x rays
    profiles
    Earth (planet)
    valence
    Charge transfer
    fine structure
    charge transfer

    Keywords

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

    ASJC Scopus subject areas

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

    Cite this

    Co-L 3 X-ray absorption near-edge structure analysis of Pr 1-xCa xCoO 3-δ and Pr 1-xSr xCoO 3-δ . / Yoshioka, Tsuyoshi; Yamamoto, Tomoyuki; Kitada, Akihiko.

    In: Physica B: Condensed Matter, Vol. 407, No. 21, 01.11.2012, p. 4114-4116.

    Research output: Contribution to journalArticle

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    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",
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    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.

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