Thermal conductivity and dimensionless figure of merit of thermoelectric rhodium oxides measured by a modified harman method

Wataru Kobayashi, W. Tamura, I. Terasaki

    研究成果: Article査読

    7 被引用数 (Scopus)

    抄録

    We have developed a modified Harman method to extract the thermoelectric signal using a squared AC current in the presence of Joule heating, and have measured the thermal conductivity and dimensionless figure of merit of single crystals of the layered rhodium oxide Bi 0.78Sr 0.4RhO 3+d and the pseudo-one-dimensional rhodium oxide Ba 1.2Rh 8O 16. We find that these rhodium oxides exhibit a small thermal conductivity of 30 mW/cm K at 200 K and rather large ZT of 0.02 below 200 K. We believe that this method will be a powerful tool for thermal conductivity measurements in sub-millimeter-sized crystals.

    本文言語English
    ページ(範囲)964-967
    ページ数4
    ジャーナルJournal of Electronic Materials
    38
    7
    DOI
    出版ステータスPublished - 2009 7

    ASJC Scopus subject areas

    • 電子工学および電気工学
    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • 材料化学

    フィンガープリント

    「Thermal conductivity and dimensionless figure of merit of thermoelectric rhodium oxides measured by a modified harman method」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