Higherature protonic conduction in LaBO3 substituted with alkaline earth elements

Naoto Kitamura, Koji Amezawa, Nobuyuki Takahashi, Jun Ichi Yamada, Teiichi Hanada, Naoya Ishida, Yasushi Idemoto

    研究成果: Article査読

    2 被引用数 (Scopus)

    抄録

    Electrical conduction properties of the aragonite-type LaBO3-based materials, in which La was substituted partially by Ca, Sr and Ba, were investigated at 500925°C with conductivity and transport-number measurements. From X-ray diffraction measurements, it was confirmed that a solubility limit of Sr to the La site is between 1 and 2 mol%. When the substitution content exceeded the solubility limit, the conductivities decreased with increasing the concentration. Such a deterioration in the conductivity was considered to be resulted from an impurity-phase formation. Regardless of substitution species, the LaBO3 exhibited predominant protonic conduction by the partial substitution of the alkaline earth elements for La, and the Sr-substituted sample showed the highest conductivities. The proton transport numbers were estimated as 0.70.9 from electromotive forces of watervapor and oxygen concentration cells.

    本文言語English
    ページ(範囲)253-256
    ページ数4
    ジャーナルJournal of the Ceramic Society of Japan
    123
    1436
    DOI
    出版ステータスPublished - 2015 4月 1

    ASJC Scopus subject areas

    • セラミックおよび複合材料
    • 化学 (全般)
    • 凝縮系物理学
    • 材料化学

    フィンガープリント

    「Higherature protonic conduction in LaBO3 substituted with alkaline earth elements」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル