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Superparamagnetism and the Morin transition in amorphous and crystalline iron oxide systems

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Abstract

This work studies the magnetic properties of microcrystalline iron oxides. These were produced from iron-nitrate under a variety of conditions using a simple hydrolysis and baking technique. In particular we wished to observe superparamagnetic behaviour of the particles produced. We also discuss the relaxation phenomena and Morin transitions observed in the hematite and ferrihydrite obtained and investigate how this is affected by noncrystallinity and particle volume.

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Authors and Affiliations

  1. Department of Physics, University of Liverpool, L69 3BX, Liverpool, England

    J. C. Chadwick, D. H. Jones & M. F. Thomas

  2. Department of Metallurgy, University of Liverpool, L69 3BX, Liverpool, England

    C. J. Tatlock & M. Devenish

Authors
  1. J. C. Chadwick
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  2. D. H. Jones
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  3. M. F. Thomas
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  4. C. J. Tatlock
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  5. M. Devenish
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Chadwick, J.C., Jones, D.H., Thomas, M.F. et al. Superparamagnetism and the Morin transition in amorphous and crystalline iron oxide systems. Hyperfine Interact 28, 541–544 (1986). https://doi.org/10.1007/BF02061506

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  • DOI: https://doi.org/10.1007/BF02061506

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