Synthesis of la1-xMxTiO3 (M = Na, K; 0≤x≤ 0.4) and the electrical properties

Hiroshi Yamamoto, Tomoyuki Tahara, Yoshiyuki Sugahara, Kazuyuki Kuroda, Chuzo Kato

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Polycrystalline materials of La1-xMxTiO3(M = Na, K;0≤x≤0.4) were prepared by solid-state reactions under an Ar atmosphere and their electrical properties were investigated as possible candidates for superconducting oxides. XRD analysis showed that the formation of orthorhombic perovskite-type compounds were obtained when × = 0 (LaTiO3) and that pseudo-cubic or cubic phases were obtained when ϗ ≥ 0.1. The lattice constants of the products decreased when × increased, suggesting the formation of solid solutions. There were small deficiencies of the alkali metals. The products in both systems showed semiconductor to metal transitions as temperature decreased when x≥0.1, and striking decreases of resistivity around 25 K were observed in both systems.

    Original languageEnglish
    Pages (from-to)137-141
    Number of pages5
    JournalPhase Transitions
    Volume41
    Issue number1-4
    DOIs
    Publication statusPublished - 1993 Jan 1

    Fingerprint

    Alkali Metals
    Polycrystalline materials
    Alkali metals
    Solid state reactions
    Perovskite
    Oxides
    Lattice constants
    Transition metals
    Solid solutions
    Electric properties
    electrical properties
    Semiconductor materials
    synthesis
    products
    alkali metals
    solid solutions
    transition metals
    solid state
    atmospheres
    Temperature

    Keywords

    • electrical property
    • perovskite
    • Titanate

    ASJC Scopus subject areas

    • Materials Science(all)
    • Instrumentation

    Cite this

    Synthesis of la1-xMxTiO3 (M = Na, K; 0≤x≤ 0.4) and the electrical properties. / Yamamoto, Hiroshi; Tahara, Tomoyuki; Sugahara, Yoshiyuki; Kuroda, Kazuyuki; Kato, Chuzo.

    In: Phase Transitions, Vol. 41, No. 1-4, 01.01.1993, p. 137-141.

    Research output: Contribution to journalArticle

    Yamamoto, Hiroshi ; Tahara, Tomoyuki ; Sugahara, Yoshiyuki ; Kuroda, Kazuyuki ; Kato, Chuzo. / Synthesis of la1-xMxTiO3 (M = Na, K; 0≤x≤ 0.4) and the electrical properties. In: Phase Transitions. 1993 ; Vol. 41, No. 1-4. pp. 137-141.
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    AU - Kuroda, Kazuyuki

    AU - Kato, Chuzo

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