Thermoelectric properties of double-perovskite oxide Sr2-xM xFeMoO6 [M = Ba, La)

Tohra Sugahara, Michitaka Ohtaki, Takeshi Souma

    Research output: Contribution to journalArticle

    26 Citations (Scopus)

    Abstract

    Doping effects for the A-site in double-perovskite type oxide Sr 2-xMxFeMoO6 (M = Ba, La) are investigated on the thermoelectric properties of the oxides. The Seebeck coefficient, S, shows that all the samples of both Ba- and La-doped Sr2FeMoO6 systems are n-type over the measured temperature range. In particular, the power factor, S2 σ, of the Sr2FeMoO6 system largely increased with increasing Ba doping level up to x = 0.3. As a consequence, S2 σ of Sr1.7 Bao 0.3FeMoO6 reached ca. 0.8 × 10-4 W/mK2, the largest value of all the samples in this study. The thermal conductivity, κ, shows a general trend in which the value decreases from ca. 1 W/mK at room temperature to ca. 0.7 W/mK at 1100 K. The dimensionless figure of merit, ZT, of the Badoped samples increased with increasing Ba doping level. Moreover, the ZT value drastically increased above 700 K due to the S2 σ value increasing above 700 K and the κ value decreasing monotonically. As a result, the ZT value of Sr 1.7Ba0.3FeMoO6 reached 0.31 at 1100 K.

    Original languageEnglish
    Pages (from-to)1278-1282
    Number of pages5
    JournalJournal of the Ceramic Society of Japan
    Volume116
    Issue number1360
    DOIs
    Publication statusPublished - Dec 2008

    Fingerprint

    Perovskite
    Oxides
    Doping (additives)
    oxides
    Seebeck coefficient
    Seebeck effect
    figure of merit
    Thermal conductivity
    thermal conductivity
    trends
    Temperature
    room temperature
    perovskite
    temperature

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Chemistry(all)
    • Condensed Matter Physics
    • Materials Chemistry

    Cite this

    Thermoelectric properties of double-perovskite oxide Sr2-xM xFeMoO6 [M = Ba, La). / Sugahara, Tohra; Ohtaki, Michitaka; Souma, Takeshi.

    In: Journal of the Ceramic Society of Japan, Vol. 116, No. 1360, 12.2008, p. 1278-1282.

    Research output: Contribution to journalArticle

    @article{80b7ba0e74174c34b9dbebb7c4bfa89f,
    title = "Thermoelectric properties of double-perovskite oxide Sr2-xM xFeMoO6 [M = Ba, La)",
    abstract = "Doping effects for the A-site in double-perovskite type oxide Sr 2-xMxFeMoO6 (M = Ba, La) are investigated on the thermoelectric properties of the oxides. The Seebeck coefficient, S, shows that all the samples of both Ba- and La-doped Sr2FeMoO6 systems are n-type over the measured temperature range. In particular, the power factor, S2 σ, of the Sr2FeMoO6 system largely increased with increasing Ba doping level up to x = 0.3. As a consequence, S2 σ of Sr1.7 Bao 0.3FeMoO6 reached ca. 0.8 × 10-4 W/mK2, the largest value of all the samples in this study. The thermal conductivity, κ, shows a general trend in which the value decreases from ca. 1 W/mK at room temperature to ca. 0.7 W/mK at 1100 K. The dimensionless figure of merit, ZT, of the Badoped samples increased with increasing Ba doping level. Moreover, the ZT value drastically increased above 700 K due to the S2 σ value increasing above 700 K and the κ value decreasing monotonically. As a result, the ZT value of Sr 1.7Ba0.3FeMoO6 reached 0.31 at 1100 K.",
    author = "Tohra Sugahara and Michitaka Ohtaki and Takeshi Souma",
    year = "2008",
    month = "12",
    doi = "10.2109/jcersj2.116.1278",
    language = "English",
    volume = "116",
    pages = "1278--1282",
    journal = "Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan",
    issn = "1882-0743",
    publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",
    number = "1360",

    }

    TY - JOUR

    T1 - Thermoelectric properties of double-perovskite oxide Sr2-xM xFeMoO6 [M = Ba, La)

    AU - Sugahara, Tohra

    AU - Ohtaki, Michitaka

    AU - Souma, Takeshi

    PY - 2008/12

    Y1 - 2008/12

    N2 - Doping effects for the A-site in double-perovskite type oxide Sr 2-xMxFeMoO6 (M = Ba, La) are investigated on the thermoelectric properties of the oxides. The Seebeck coefficient, S, shows that all the samples of both Ba- and La-doped Sr2FeMoO6 systems are n-type over the measured temperature range. In particular, the power factor, S2 σ, of the Sr2FeMoO6 system largely increased with increasing Ba doping level up to x = 0.3. As a consequence, S2 σ of Sr1.7 Bao 0.3FeMoO6 reached ca. 0.8 × 10-4 W/mK2, the largest value of all the samples in this study. The thermal conductivity, κ, shows a general trend in which the value decreases from ca. 1 W/mK at room temperature to ca. 0.7 W/mK at 1100 K. The dimensionless figure of merit, ZT, of the Badoped samples increased with increasing Ba doping level. Moreover, the ZT value drastically increased above 700 K due to the S2 σ value increasing above 700 K and the κ value decreasing monotonically. As a result, the ZT value of Sr 1.7Ba0.3FeMoO6 reached 0.31 at 1100 K.

    AB - Doping effects for the A-site in double-perovskite type oxide Sr 2-xMxFeMoO6 (M = Ba, La) are investigated on the thermoelectric properties of the oxides. The Seebeck coefficient, S, shows that all the samples of both Ba- and La-doped Sr2FeMoO6 systems are n-type over the measured temperature range. In particular, the power factor, S2 σ, of the Sr2FeMoO6 system largely increased with increasing Ba doping level up to x = 0.3. As a consequence, S2 σ of Sr1.7 Bao 0.3FeMoO6 reached ca. 0.8 × 10-4 W/mK2, the largest value of all the samples in this study. The thermal conductivity, κ, shows a general trend in which the value decreases from ca. 1 W/mK at room temperature to ca. 0.7 W/mK at 1100 K. The dimensionless figure of merit, ZT, of the Badoped samples increased with increasing Ba doping level. Moreover, the ZT value drastically increased above 700 K due to the S2 σ value increasing above 700 K and the κ value decreasing monotonically. As a result, the ZT value of Sr 1.7Ba0.3FeMoO6 reached 0.31 at 1100 K.

    UR - http://www.scopus.com/inward/record.url?scp=57149133498&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=57149133498&partnerID=8YFLogxK

    U2 - 10.2109/jcersj2.116.1278

    DO - 10.2109/jcersj2.116.1278

    M3 - Article

    AN - SCOPUS:57149133498

    VL - 116

    SP - 1278

    EP - 1282

    JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

    JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan

    SN - 1882-0743

    IS - 1360

    ER -