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Magnetophoretic deposition of nanocomposites

Published online by Cambridge University Press:  31 January 2011

Joseph L. Katz ,
Yangchuan Xing  and
R. C. Cammarata
Joseph L. Katz*
Affiliation:
Department of Chemical Engineering and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, 21218
Yangchuan Xing
Affiliation:
Department of Chemical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
R. C. Cammarata
Affiliation:
Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218
*
a)Address all correspondence to this author. e-mail: JLK@jhu.edu

Abstract

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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.

Information

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 12 , December 1999 , pp. 4457 - 4459
Copyright
Copyright © Materials Research Society 1999

References

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