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    • Keywords


      Ferrofluids; nickel ferrite; field induced assembling; ultra fine particles.

    • Abstract


      Ultra fine precursors for ferrofluid synthesis, belonging to the series, Ni𝑥Fe1-𝑥Fe2O4 (where `𝑥’ varies from `0’ to `0.6’ in steps of 0.1), were synthesized. Ferrofluids based on these fine particles were prepared with oleic acid as surfactant and kerosene as carrier. Ferrofluidic thin films were made on glass substrates and magnetic field induced laser transmission was studied. The pattern exhibited by the films under the influence of a magnetic field was observed with the help of a CCD camera. The analysis of results confirms the chain formation of particles in the presence of an applied magnetic field and their saturation at higher applied fields.

    • Author Affiliations


      V S Abraham1 S Swapna Nair2 S Rajesh3 U S Sajeev2 M R Anantharaman2

      1. International School of Photonics, Cochin University of Science and Technology, Cochin 682 022, India
      2. Department of Physics, Cochin University of Science and Technology, Cochin 682 022, India
      3. Biophysics and Microscopy Group, University of Amsterdam, The Netherlands
    • Dates

  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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