High temperature thermoelectric properties of delafossite-type oxides CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti)

Tomohiro Nozaki, Kei Hayashi, T. Kajitani

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

We have measured the electrical conductivity σ and Seebeck coefficient S of CuFe0.98M0.02O2 (M=Mg, Zn, Ni, Co, Mn, or Ti) at high temperatures. The highest electrical conductivity of 30 S/cm was obtained with the Mg-doped sample above 600 K. The Seebeck coefficient of the doped samples were still high (higher than 210 μV/K). The maximum power factor P=σS2=4.1×10-4 W/mK2 at 1150 K was obtained with CuFe0.98Mg0.02O2. The above results were well explained in terms of the valence states and ionic radii of the dopants. The chemical stability of the doped samples was discussed by measuring the temperature dependent power factor during the repeated cycles of heating and cooling processes.

本文言語English
ホスト出版物のタイトルProceedings ICT'07 - 26th International Conference on Thermoelectrics
ページ167-170
ページ数4
DOI
出版ステータスPublished - 2007 12 1
イベントICT'07 - 26th International Conference on Thermoelectrics - Jeju, Korea, Republic of
継続期間: 2007 6 32007 6 7

出版物シリーズ

名前International Conference on Thermoelectrics, ICT, Proceedings

Other

OtherICT'07 - 26th International Conference on Thermoelectrics
CountryKorea, Republic of
CityJeju
Period07/6/307/6/7

ASJC Scopus subject areas

  • Engineering(all)

フィンガープリント 「High temperature thermoelectric properties of delafossite-type oxides CuFe<sub>0.98</sub>M<sub>0.02</sub>O<sub>2</sub> (M=Mg, Zn, Ni, Co, Mn, or Ti)」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。

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