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Oriented Growth of Nanocrystalline Gamma Ferric Oxide in Electrophoretically Deposited Films

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Abstract

Films of nanocrystalline γ-Fe2O3 were deposited on silicon substrates by using the technique of electrophoretic deposition. The precursor powder was nanocrystalline γ-Fe2O3, which was synthesized, using DC arc plasma in the oxygen ambient by vapour–vapour interaction in gas phase condensation; at a stabilized arc current of 40 A. This powder was characterized by X-ray diffraction, Transmission Electron Microscopy, Vibrating Sample Magnetometer and Mössbauer Spectroscopy. An increase in directional coercivity was observed in case of films deposited on silicon substrates, which is dramatically significant. Preferred orientation of almost similar sized nanocrystalline magnetic domains in deposited films is evident from the results of X-ray diffraction and Transmission Electron Microscopy results. The preferred alignment of the nanocrystallites seems to be responsible for the significant changes observed in magnetic properties of films.

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Authors and Affiliations

  1. Center for Advanced Research in Material Science and Solid State Physics, Department of Physics, University of Pune, Pune, 411 007, India

    Tejashree M. Bhave, C. Balasubramanian, Harshada Nagar, S. K. Date & S. V. Bhoraskar

  2. National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune, 411 008, India

    Shailaja Kulkarni, Renu Pasricha & P. P. Bakare

Authors
  1. Tejashree M. Bhave
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  2. C. Balasubramanian
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  3. Harshada Nagar
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  4. Shailaja Kulkarni
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  5. Renu Pasricha
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  6. P. P. Bakare
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  7. S. K. Date
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  8. S. V. Bhoraskar
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Correspondence to S. V. Bhoraskar.

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Bhave, T.M., Balasubramanian, C., Nagar, H. et al. Oriented Growth of Nanocrystalline Gamma Ferric Oxide in Electrophoretically Deposited Films. Hyperfine Interact 160, 199–209 (2005). https://doi.org/10.1007/s10751-005-9165-5

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  • DOI: https://doi.org/10.1007/s10751-005-9165-5

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