Observation of the charge order in perovskite manganite Pr 0.5Ca 0.5MnO 3 by Mössbauer quadrupole effect

Shin Nakamura, Akio Fuwa, Yorihiko Tsunoda

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    The charge order in a perovskite manganite Pr 0.5Ca 0.5MnO 3 was investigated by Mössbauer spectroscopy. The quadrupole splitting and the absorption line width jump to an increase when lowering the temperature below 230 K (T co), which is indicative of a phase transition to a monoclinic structure due to the charge ordering, or due to a local Jahn-Teller effect due to the presence of Mn 3+ ions. The intensity ratio of the doublet lines also changes at T co. Local and dynamical Jahn-Teller effect (polarons) with a relaxation time of 10 -8 s is present even in the metallic state.

    Original languageEnglish
    Pages (from-to)29-32
    Number of pages4
    JournalHyperfine Interactions
    Volume208
    Issue number1-3
    DOIs
    Publication statusPublished - 2012 Mar

    Keywords

    • Fe Mössbauer spectroscopy
    • Charge order
    • Perovskite manganite
    • Pr Ca MnO
    • Quadrupole effect

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Nuclear and High Energy Physics
    • Atomic and Molecular Physics, and Optics
    • Physical and Theoretical Chemistry

    Fingerprint Dive into the research topics of 'Observation of the charge order in perovskite manganite Pr <sub>0.5</sub>Ca <sub>0.5</sub>MnO <sub>3</sub> by Mössbauer quadrupole effect'. Together they form a unique fingerprint.

  • Cite this