Synthesis and Structures of Reduced Niobates with Four Perovskite-like Layers and Their Semiconducting Properties

W. Sugimoto, H. Ohkawa, M. Naito, Yoshiyuki Sugahara, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Carriers were successfully doped into RbCa2NaNb4O13 by the substitution of Sr2+ for Na+, yielding electroconducting niobates with a layered structure consisting of four perovskite-like layers. Single-phase products of polycrystalline RbCa2Na1-xSrxNb4O13 (x = 0.2 and 0.4) were synthesized by the solid-state reaction of RbCa2Nb3O10, Sr5Nb4O15, Nb2O5, and Nb metal. The solid solutions were indexed based on a tetragonal structure, corresponding to the end-member RbCa2NaNb4O13. With the increase in the amount of strontium substitution, an expansion of the c-axis was observed while the a-axis was essentially constant. The products showed semiconducting properties.

    Original languageEnglish
    Pages (from-to)508-512
    Number of pages5
    JournalJournal of Solid State Chemistry
    Volume148
    Issue number2
    Publication statusPublished - 1999 Dec

    Fingerprint

    niobates
    Perovskite
    Substitution reactions
    substitutes
    Strontium
    synthesis
    products
    Solid state reactions
    strontium
    Solid solutions
    solid solutions
    Metals
    solid state
    expansion
    metals
    perovskite

    Keywords

    • Electrical conduction
    • Layered perovskite
    • Niobate
    • Reduced oxidation state
    • Rietveld analysis
    • Solid-state reaction

    ASJC Scopus subject areas

    • Inorganic Chemistry
    • Physical and Theoretical Chemistry
    • Materials Chemistry

    Cite this

    Synthesis and Structures of Reduced Niobates with Four Perovskite-like Layers and Their Semiconducting Properties. / Sugimoto, W.; Ohkawa, H.; Naito, M.; Sugahara, Yoshiyuki; Kuroda, Kazuyuki.

    In: Journal of Solid State Chemistry, Vol. 148, No. 2, 12.1999, p. 508-512.

    Research output: Contribution to journalArticle

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    AU - Kuroda, Kazuyuki

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