Anisotropy of Electrical Properties in Pure and Doped αFe2O3

  • Driss Benjelloun
  • Jean-Pierre Bonnet
  • Marc Onillon
Part of the NATO ASI Series book series (NSSB, volume 129)

Abstract

The electrical conductivity and the thermoelectric power of pure and nickel-doped α Fe203, studied in the crystallographic plane (001) and along the [001] axis have shown typical anisotropic behaviour.

When the electrical conductivity is predominantly extrinsic, its anisotropy can be enhanced, the magnitude of the phenomenon depending on the nickel concentration. However an inversion of the anisotropy is observed for the atom ratio Ni/Fe ≃ 1.4 10−3. Models have been developped in order to interpret these behaviours.

In the pure material and for temperatures higher than 1050 K the electrical conductivity is essentially intrinsic.

Keywords

Nickel Anisotropy Platinum Argon Allo 

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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Driss Benjelloun
    • 1
  • Jean-Pierre Bonnet
    • 1
  • Marc Onillon
    • 1
  1. 1.Laboratoire de Chimie du Solide du CNRSUniversité de Bordeaux ITalence CedexFrance

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