Journal of Materials Science

, Volume 29, Issue 14, pp 3797–3801 | Cite as

Preparation of colloidal Fe3O4 ultrafine particles in microemulsions

  • L. Liz
  • M. A. López Quintela
  • J. Mira
  • J. Rivas


The preparation of magnetite particles is reported from the precipitation of Fe2+/Fe3+ with NH4OH in several kinds of microemulsions: AOT/n-heptane/water microemulsions and a new non-toxic microemulsion system whose phase behaviour and structure has been recently studied. It is shown that both the droplet size and the presence of interactions in the dispersed phase greatly influence the final size of the obtained particles. In addition, the size of the particles can be increased by successive repetition of the reaction inside the droplets of the microemulsion.


Polymer Precipitation Fe3O4 Magnetite Disperse Phase 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • L. Liz
    • 1
  • M. A. López Quintela
    • 1
  • J. Mira
    • 1
  • J. Rivas
    • 1
  1. 1.Departments of Chemical Physics and Applied PhysicsUniversity of Santiago de CompostelaSantiago de CompostelaSpain

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