Synthesis and structural study of the KNb 4O 6-type compound

Wataru Sugimoto, Ken Mimuro, Yoshiyuki Sugahara, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Polycrystalline samples with nominal compositions K 1+xNb 4O 6 (0≤x≤1.0) were prepared by the solid-state reaction of KNbO 3, Nb 2O 5 and Mb. Powder X-ray diffraction analysis revealed that the KNb 4O 6-type compound was obtained as the major phase when x≥0.4. Transmission electron microscopy observations showed that when x=0.4, the KNb 4O 6-type compound contained intergrowth defects. In contrast, when x=1.0, practically no intergrowth defects were observed, although this sample contained KNbO 3 as an impurity phase. The relation between the nominal composition and the formation of the intergrowth defects is discussed.

    Original languageEnglish
    Pages (from-to)318-321
    Number of pages4
    JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
    Volume107
    Issue number4
    Publication statusPublished - 1999

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    Defects
    defects
    synthesis
    Chemical analysis
    Solid state reactions
    X ray diffraction analysis
    Impurities
    Transmission electron microscopy
    solid state
    Powders
    impurities
    transmission electron microscopy
    diffraction
    x rays

    Keywords

    • Intergrowth defects
    • Perovskite
    • Reduced niobate
    • Rietveld analysis
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Ceramics and Composites

    Cite this

    Synthesis and structural study of the KNb 4O 6-type compound. / Sugimoto, Wataru; Mimuro, Ken; Sugahara, Yoshiyuki; Kuroda, Kazuyuki.

    In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 107, No. 4, 1999, p. 318-321.

    Research output: Contribution to journalArticle

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    AU - Mimuro, Ken

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    AU - Kuroda, Kazuyuki

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