A study on Hc-enhancement in Co-modified γ-Fe2O3

A. Bensaoula, C. W. Chu, P. H. Hor, A. Ignatiev, J. S. Liu, R. L. Meng, A. Mesarwi, J. Richardson, C. S. Ting, Y. Q. Wang, J. Wolfe

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4 Citations (Scopus)


We have investigated the effects of valence states and Co-distributions on the coercivity of particulate and thin film Co-treated γ-Fe2O3. A maximum Hc of 2 kOe has been obtained in thin films prepared by a new simple method. We found that Co-ions exist in the divalent states probably in the form of ferromagnetic CoFe2O4 and that simple CoO to γ-Fe2O3 interfaces do not appear to enhance Hc. On the other hand, we observed complex diffused interfaces in a thin film sample with enhanced Hc. The diffused interfaces may be responsible for the Hc-enhancement in Co-modified γ-Fe2O3 recording media.

Original languageEnglish
Pages (from-to)1697-1698
Number of pages2
JournalJournal of Magnetism and Magnetic Materials
Issue numberPART 3
Publication statusPublished - 1986 Feb

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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