2006•ECS TransactionsOpen access
Electrical and Structural Properties of La(Fe,M)O3 (M = Mn, Ni, Cu)
Xiao‐Dong Zhou, Qipei Cai, Jinbo B. Yang, B. J. Scarfino, W. J. James, W. B. Yelon, Harlan U. Anderson, Young‐Han Shin, Larry R. Pederson
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Abstract
Structural and electrical properties of doped LaFeO3 with Mn, Ni or Cu are studied by neutron diffraction, x-ray diffraction, conductivity measurements and thermoelectrical power measurements. Generation of the carriers (electron holes) in Mn and Cu doped LaFeO3 is a thermally activated process. The carrier fraction reaches a plateau determined by the dopant content. Electrical conductivity of Ni doped LaFeO3 is particularly high with a negligible activation energy, indicating Ni doped LaFeO3 is a metallic conductor, whereas conduction in Mn and Cu doped LaFeO3 is through polaron hopping.
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