Electrical, thermoelectric, and structural properties of La(M xFe 1-x)O 3 (M=Mn, Ni, Cu)

X. D. Zhou, J. B. Yang, E. C. Thomsen, Q. Cai, B. J. Scarfino, Z. Nie, G. W. Coffey, W. J. James, W. B. Yelon, H. U. Anderson, L. R. Pederson

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Abstract

Electrical, thermoelectric, and structural properties were studied in transition metal ion-substituted LaFe O3: La (Mnx Fe1-x) O3, La (Nix Fe1-x) O3, and La (Cux Fe1-x) O3. Structural analysis showed that a continuous series of solid solutions with no intermediate phases are forming over a wide range (0<x<1) with substitutions of Mn and Ni, whereas the maximum Cu content is 30% from this study. The Ni-substituted LaFe O3 specimens have substantially higher conductivity than those substituted with either Mn or Cu, measured in air from 100 to 1000°C. The Seebeck coefficient of La (Mnx Fe1-x) O3 and La (Cux Fe1-x) O3 has a strong temperature dependence, indicating a thermally activated carrier formation. The activation energy for carrier formation in La (Cux Fe1-x) O3 is greater than that in La (Mnx Fe1-x) O3. Thermoelectric and electrical properties evidence conduction through polaron hopping in both Mn- and Cu-substituted LaFe O3, whereas the Ni-substituted LaFe O3 shows metallic conductivity.The Electrochemical Society

Original languageEnglish
Article number056612JES
JournalJournal of the Electrochemical Society
Volume153
Issue number12
DOIs
Publication statusPublished - 2006
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Zhou, X. D., Yang, J. B., Thomsen, E. C., Cai, Q., Scarfino, B. J., Nie, Z., Coffey, G. W., James, W. J., Yelon, W. B., Anderson, H. U., & Pederson, L. R. (2006). Electrical, thermoelectric, and structural properties of La(M xFe 1-x)O 3 (M=Mn, Ni, Cu). Journal of the Electrochemical Society, 153(12), [056612JES]. https://doi.org/10.1149/1.2358840