• DocumentCode
    2831325
  • Title

    Enhanced thermoelectric properties at x∼0.1 in La1-xSrxCoO3 and La1-xSrx(Co1-yMy)O3 (M=Cr, Cu)

  • Author

    Fujishiro, H. ; Fujine, Y. ; Kashiwada, Y. ; Ikebe, M. ; Hejtmanek, I.

  • Author_Institution
    Fac. of Eng., Iwate Univ., Morioka, Japan
  • fYear
    2003
  • fDate
    17-21 Aug. 2003
  • Firstpage
    235
  • Lastpage
    238
  • Abstract
    The thermoelectric properties of the La1-xSrxCoO3 system have been investigated from 10 K to 300 K. The figure of merit Z and power factor P increase with increasing Sr concentration x and show a maximum for x=0.10-0.15, where the ferromagnetic (FM) order starts to appear. The maximum Z value (Z= 150 x 10-6 K-1 at 230 K for x=0.10) is larger than those of layered cobaltites. The Z and P values are enhanced by the 5 % Co-site substitution by Cr for the overdoped concentration (x=0.20), but are depressed for the nearly optimum doped one (x=0.15). The results are discussed in conjunction with the carrier density n of this system.
  • Keywords
    carrier density; chromium compounds; cobalt compounds; copper compounds; ferromagnetic materials; lanthanum compounds; strontium compounds; thermoelectricity; 10 to 300 K; 230 K; La1-xSrx(Co1-yCry)O3; La1-xSrx(Co1-yCuy)O3; La1-xSrxCoO3; carrier density; enhanced thermoelectric properties; ferromagnetic order; figure of merit; power factor; Chromium; Iron; Magnetic properties; Magnetization; Reactive power; State estimation; Strontium; Temperature dependence; Thermal conductivity; Thermoelectricity;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Thermoelectrics, 2003 Twenty-Second International Conference on - ICT
  • Print_ISBN
    0-7803-8301-X
  • Type

    conf

  • DOI
    10.1109/ICT.2003.1287492
  • Filename
    1287492
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2831325