Electronic Conductivity, Seebeck Coefficient, and Defect Structure of La1-xSrxFeO3 (x=0.l, 0.25)

  1. JUNICHIRO MIZUSAKI†,
  2. TADASHI SASAMOTO‡,†,
  3. W. ROGER CANNON‡,§,
  4. H. KENT BOWEN‡

Article first published online: 2 JUN 2006

DOI: 10.1111/j.1151-2916.1983.tb15707.x

Issue

Journal of the American Ceramic Society

Journal of the American Ceramic Society

Volume 66, Issue 4, pages 247–252, April 1983

Additional Information

How to Cite

MIZUSAKI, J., SASAMOTO, T., CANNON, W. R. and BOWEN, H. K. (1983), Electronic Conductivity, Seebeck Coefficient, and Defect Structure of La1-xSrxFeO3 (x=0.l, 0.25). Journal of the American Ceramic Society, 66: 247–252. doi: 10.1111/j.1151-2916.1983.tb15707.x

Author Information

  1. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

  1. ‡

    Member, the American Ceramic Society.

  2. †

    Now with the Department of Industrial Chemistry, Faculty of Engineering, University of Tokyo, Tokyo, Japan.

  3. §

    Now with the Department of General Education. Tokvo National Technical College, Tokyo, Japan.

  • ‡

    Member, the American Ceramic Society.

  • †

    Now with the Department of Industrial Chemistry, Faculty of Engineering, University of Tokyo, Tokyo, Japan.

  • §

    Now with the Department of General Education. Tokvo National Technical College, Tokyo, Japan.

  • Now with the Department of Ceramics, Rutgers, The State Universlty, Piscataway, New Jersey 08854.

Publication History

  1. Issue published online: 2 JUN 2006
  2. Article first published online: 2 JUN 2006
  3. Received March 15, 1982; revised copy received November 1, 1982; approved Noymber 5, 1982.

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The electrical conductivity and Seebeck coefficients of La1-xSrxFeO3 (x=0.1, 0.25) were measured as a function of oxygen partial pressure, PO2, at T=900° to 1300°C. The electrical conduction was p type in the higher PO2 range, and n type in the lower PO2 range. The Seebeck coefficient indicated that the conduction was due to electron hopping between Fe×Fe and FeFe, in the higher PO2 range and electron hopping between Fe′Fe and Fe×Fe in the lower range. The carrier concentrations were calculated from the values of electrical conductivity and Seebeck coefficient. From the PO2 dependences of the carrier concentrations, the defect structure of La1-xSrxFeO3 was determined. It was found that the electrical properties can be described by considering the imperfections SrLa, Vo, FeFe, and Fe′Fe.

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