Preparation and electrical properties of KCa2-xLaxNb3O10

Daisuke Hamada, Masahiko Machida, Yoshiyuki Sugahara, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

    Original languageEnglish
    Pages (from-to)69-72
    Number of pages4
    JournalJournal of Materials Chemistry
    Volume6
    Issue number1
    Publication statusPublished - 1996 Jan

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    Perovskite
    Lattice constants
    Electric properties
    electrical properties
    preparation
    Electrons
    lattice parameters
    conduction
    Temperature
    electrical resistivity
    products
    electrons
    perovskite

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Preparation and electrical properties of KCa2-xLaxNb3O10 . / Hamada, Daisuke; Machida, Masahiko; Sugahara, Yoshiyuki; Kuroda, Kazuyuki.

    In: Journal of Materials Chemistry, Vol. 6, No. 1, 01.1996, p. 69-72.

    Research output: Contribution to journalArticle

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    abstract = "Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.",
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    AB - Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

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