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)


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.


Electrical Conductivity Thermoelectric Power Crystallographic Direction Nickel Concentration Pure Crystal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    D. Benjelloun, J.P. Bonnet, J.P. Doumerc, J.C. Launay, M. Onillon and P. Hagenmuller,Mat. Chem. and Phys. (in press).Google Scholar
  2. 2.
    D. Benjelloun, J.P. Bonnet, P. Dordor, J.C. Launay, M. Onillon and P. Hagenmuller,Revue de Chimie Minérale (in press).Google Scholar
  3. 3.
    P. Dordor, E. Marquestaut and G. Villeneuve,Revue Phys. Appl., 15:1607 (1980)Google Scholar
  4. 4.
    P. Kofstad “Non Stoichiometry, Diffusion and Electrical Conductivityin Binary Metal Oxides”, Wiley, New YorkGoogle Scholar
  5. 5.
    R.F.G. Gardner, F. Swett and D.W. Tanner,J. Phys. Chem. Solids, 24:1175 (1963)ADSCrossRefGoogle Scholar
  6. 6.
    J.H.W. De Wit,9thth International Symposium on the Reactivity of Solids, Krakow (1980).Google Scholar
  7. 7.
    S. Wittekoek, T.J.A. Popma, J.M. Roberlson and P.F.B. Bougers,Phys. Rev., B12:2777 (1975).ADSGoogle Scholar
  8. 8.
    J. Hejtmaneck, Thèse dfUniversité, n° 134 (1982), Université de Bordeaux I, France.Google Scholar
  9. 9.
    J.B. Goodenough, “Metallic Oxides”, Progressin Solid State Chemistry, H. Reiss Ed., Pergamon Press, 5:145 (1971).Google Scholar
  10. 10.
    F.J. Morin,Phys. Rev., 93: 1195 (1954)ADSCrossRefGoogle Scholar
  11. 11.
    A.M. Redon and J. Vigneron,Solar Cells, 3: 176 (1981).ADSGoogle Scholar

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

Personalised recommendations