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Magnetophoretic deposition of nanocomposites

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Abstract

This communication reports the novel idea of using a magnetic field gradient to hold magnetic nanoparticles at desired densities in a fixed location (e.g., on an electrode surface), while metal atoms are deposited electrochemically in the interstices between them. Using it, nanocomposites consisting of γ–Fe2O3 nanoparticles (with a mean size of about 40 nm) in a copper metal matrix were reproducibly fabricated, with particle volume fractions ranging from 0.2% to 50%. These nanocomposites, ceramic magnetic particles in a conductive metal matrix, are expected to have unusual or enhanced mechanical, electrical, and magnetic properties.

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Authors and Affiliations

  1. Department of Chemical Engineering and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, 21218, USA

    Joseph L. Katz

  2. Department of Chemical Engineering, The Johns Hopkins University, Baltimore, Maryland, 21218, USA

    Yangchuan Xing

  3. Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland, 21218, USA

    R. C. Cammarata

Authors
  1. Joseph L. Katz
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  2. Yangchuan Xing
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  3. R. C. Cammarata
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Correspondence to Joseph L. Katz.

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Katz, J.L., Xing, Y. & Cammarata, R.C. Magnetophoretic deposition of nanocomposites. Journal of Materials Research 14, 4457–4459 (1999). https://doi.org/10.1557/JMR.1999.0602

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  • DOI: https://doi.org/10.1557/JMR.1999.0602

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