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Nanoparticles of: Synthesis and superparamagnetic properties

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The European Physical Journal B - Condensed Matter and Complex Systems Aims and scope Submit manuscript

Abstract:

By using oil in water micelles, cobalt ferrite particles having an average diameter around 3 nm were synthetised. These nanoparticles are characterized by the presence of cation vacancies and no Fe(II) is observed, as it has been described in literature previously. Chemical interfacial treatment allows to coat the particles with citrate derivatives. The magnetic properties of uncoated and coated particles strongly diluted in a polymer substrate are compared by magnetization measurements and 57Fe Mössbauer spectroscopy. The anisotropy constant is shown to be independent of coating, whereas the magnetization is found to be larger in the uncoated particles.

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Authors and Affiliations

  1. Laboratoire Structure et Réactivité des Systèmes Interfaciaux, Université Pierre et Marie Curie (URA CNRS 1662) 4 place Jussieu, B.P. 52, 75005, Paris, France, FR

    A.T. Ngo & M.P. Pileni

  2. CEA-DSM-DRECAM, Service de Physique de l'État Condensé, CEA Saclay, 91191, Gif-sur-Yvette Cedex, France

    P. Bonville

Authors
  1. A.T. Ngo
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  2. P. Bonville
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  3. M.P. Pileni
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Received 3 February 1998

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Ngo, A., Bonville, P. & Pileni, M. Nanoparticles of: Synthesis and superparamagnetic properties. Eur. Phys. J. B 9, 583–592 (1999). https://doi.org/10.1007/s100510050801

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  • DOI: https://doi.org/10.1007/s100510050801

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