Thermoelectric properties of the AA′3B4O12-type ordered perovskite oxides

Ichiro Terasaki, Wataru Kobayashi

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    The perovskite transition-metal oxide ABO3 has been extensively studied in various areas in solids. While the B ion determines the electronic properties, e.g., ferroelectricity, ferromagnetism, and superconductivity, the A site has been regarded as a "back-seat player" to change the doping level or the bandwidth. However, in the ordered perovskite oxide AA′3B4O12, the A site order is closely related to the peculiar electronic states. In CaMn3Mn4O12, the unusually small bandwidth justifies to extrapolate the transport data to the high-temperature limit, and in CaCu3Ru4O12, a novel heavy-fermion state is realized through the Cu-O-Ru interaction.

    Original languageEnglish
    Pages (from-to)439-445
    Number of pages7
    JournalProgress in Solid State Chemistry
    Volume35
    Issue number2-4 SPEC. ISS.
    DOIs
    Publication statusPublished - 2007

    Keywords

    • A site ordering
    • Heavy fermion
    • Thermoelectric properties

    ASJC Scopus subject areas

    • Materials Chemistry

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