Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure

Michitaka Ohtaki, Tsutomu Tokunaga, Koichi Eguchi, Hiromichi Arai

    研究成果: 会議への寄与タイプ論文

    17 引用 (Scopus)

    抄録

    Thermoelectric properties of perovskite-type oxides are investigated with particular interests in their hopping carrier mobility. A series of partial substitution for metal cations in CaMnO 3 , a perovskite-type oxide showing small polaron hopping conduction, reveals that larger substituents for both Ca and Mn sites result in higher carrier mobilities. Consequently, Bi and In attain the largest ZT values for the Ca and Mn site substitutions, respectively. Increase in the hopping intersite distance is suggested as a reason of the enhanced mobilities. As a consequence, the largest substituent for the Mn site, In, gives the highest mobility, and thereby brings about the largest power factor for Ca(Mn 0.9 In 0.1 )O 3 . Also benefiting from the fairly low thermal conductivity, the In-substituted sample attains ZT = 0.16 at 900 °C.

    元の言語英語
    ページ224-227
    ページ数4
    出版物ステータス出版済み - 12 1 1997
    イベントProceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97 - Dresden, Ger
    継続期間: 8 26 19978 29 1997

    その他

    その他Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97
    Dresden, Ger
    期間8/26/978/29/97

    Fingerprint

    Carrier mobility
    Perovskite
    Substitution reactions
    Oxides
    Thermal conductivity
    Positive ions
    Metals

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

    これを引用

    Ohtaki, M., Tokunaga, T., Eguchi, K., & Arai, H. (1997). Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure. 224-227. 論文発表場所 Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97, Dresden, Ger, .

    Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure. / Ohtaki, Michitaka; Tokunaga, Tsutomu; Eguchi, Koichi; Arai, Hiromichi.

    1997. 224-227 論文発表場所 Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97, Dresden, Ger, .

    研究成果: 会議への寄与タイプ論文

    Ohtaki, M, Tokunaga, T, Eguchi, K & Arai, H 1997, 'Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure' 論文発表場所 Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97, Dresden, Ger, 8/26/97 - 8/29/97, pp. 224-227.
    Ohtaki M, Tokunaga T, Eguchi K, Arai H. Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure. 1997. 論文発表場所 Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97, Dresden, Ger, .
    Ohtaki, Michitaka ; Tokunaga, Tsutomu ; Eguchi, Koichi ; Arai, Hiromichi. / Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure. 論文発表場所 Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97, Dresden, Ger, .4 p.
    @conference{488d0b109eed47a0b178f69a510c1faa,
    title = "Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure",
    abstract = "Thermoelectric properties of perovskite-type oxides are investigated with particular interests in their hopping carrier mobility. A series of partial substitution for metal cations in CaMnO 3 , a perovskite-type oxide showing small polaron hopping conduction, reveals that larger substituents for both Ca and Mn sites result in higher carrier mobilities. Consequently, Bi and In attain the largest ZT values for the Ca and Mn site substitutions, respectively. Increase in the hopping intersite distance is suggested as a reason of the enhanced mobilities. As a consequence, the largest substituent for the Mn site, In, gives the highest mobility, and thereby brings about the largest power factor for Ca(Mn 0.9 In 0.1 )O 3 . Also benefiting from the fairly low thermal conductivity, the In-substituted sample attains ZT = 0.16 at 900 °C.",
    author = "Michitaka Ohtaki and Tsutomu Tokunaga and Koichi Eguchi and Hiromichi Arai",
    year = "1997",
    month = "12",
    day = "1",
    language = "English",
    pages = "224--227",
    note = "Proceedings of the 1997 16th International Conference on Thermoelectrics, ICT'97 ; Conference date: 26-08-1997 Through 29-08-1997",

    }

    TY - CONF

    T1 - Hopping carrier mobilities and thermoelectric properties of oxide materials with perovskite-related structure

    AU - Ohtaki, Michitaka

    AU - Tokunaga, Tsutomu

    AU - Eguchi, Koichi

    AU - Arai, Hiromichi

    PY - 1997/12/1

    Y1 - 1997/12/1

    N2 - Thermoelectric properties of perovskite-type oxides are investigated with particular interests in their hopping carrier mobility. A series of partial substitution for metal cations in CaMnO 3 , a perovskite-type oxide showing small polaron hopping conduction, reveals that larger substituents for both Ca and Mn sites result in higher carrier mobilities. Consequently, Bi and In attain the largest ZT values for the Ca and Mn site substitutions, respectively. Increase in the hopping intersite distance is suggested as a reason of the enhanced mobilities. As a consequence, the largest substituent for the Mn site, In, gives the highest mobility, and thereby brings about the largest power factor for Ca(Mn 0.9 In 0.1 )O 3 . Also benefiting from the fairly low thermal conductivity, the In-substituted sample attains ZT = 0.16 at 900 °C.

    AB - Thermoelectric properties of perovskite-type oxides are investigated with particular interests in their hopping carrier mobility. A series of partial substitution for metal cations in CaMnO 3 , a perovskite-type oxide showing small polaron hopping conduction, reveals that larger substituents for both Ca and Mn sites result in higher carrier mobilities. Consequently, Bi and In attain the largest ZT values for the Ca and Mn site substitutions, respectively. Increase in the hopping intersite distance is suggested as a reason of the enhanced mobilities. As a consequence, the largest substituent for the Mn site, In, gives the highest mobility, and thereby brings about the largest power factor for Ca(Mn 0.9 In 0.1 )O 3 . Also benefiting from the fairly low thermal conductivity, the In-substituted sample attains ZT = 0.16 at 900 °C.

    UR - http://www.scopus.com/inward/record.url?scp=0031386564&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0031386564&partnerID=8YFLogxK

    M3 - Paper

    AN - SCOPUS:0031386564

    SP - 224

    EP - 227

    ER -