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The preparation and characterization of ultrafine cobalt-iron oxides

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Abstract

Seven ultrafine samples (125 to 60 m2/g) of the cobalt-iron oxide series, Co x Fe3−x ,O4, with 0≤x≤3, were prepared by co-precipitation of the metal hydroxides, followed by dehydration of the hydroxide at 100† C. X-ray and chemical analyses confirmed that true spinels were formed. The electrical conductivity and the activation energy for conduction of the powders were determined, and used to define the electronic structure of this series in conjunction with theoretical considerations based on crystal field theory.

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Authors and Affiliations

  1. Department of Chemistry, The City University, London, UK

    A. C. C. Tseung & J. R. Goldstein

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  1. A. C. C. Tseung
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  2. J. R. Goldstein
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Tseung, A.C.C., Goldstein, J.R. The preparation and characterization of ultrafine cobalt-iron oxides. J Mater Sci 7, 1383–1390 (1972). https://doi.org/10.1007/BF00574930

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  • DOI: https://doi.org/10.1007/BF00574930

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