One-step production of optimized Fe-Ga particles by spark erosion

J. I. Hong, V. C. Solomon, David Smith, F. T. Parker, E. M. Summers, A. E. Berkowitz

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Abstract

Spherical Fe-Ga particles were prepared by spark erosion in liquid Ar, which directly incorporated the desirable rapid quench from high temperatures. The compositions of the particles investigated were 15.0, 16.3, and 18.9 at. % Ga, respectively, as determined from electron-probe microanalysis, x-ray diffraction, and Mössbauer spectra. Composites for magnetostriction measurements were prepared by mixing particles with epoxy at the volume fraction of 48% and curing in a magnetic field. Magnetostriction values of the composites were comparable to those of polycrystalline chill-cast alloys of the same compositions. Composites with particles having Ga concentrations of 18.9 at. % had the highest magnetostriction, similar to results reported for bulk Fe-Ga alloys.

Original languageEnglish (US)
Article number142506
JournalApplied Physics Letters
Volume89
Issue number14
DOIs
StatePublished - Oct 12 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Hong, J. I., Solomon, V. C., Smith, D., Parker, F. T., Summers, E. M., & Berkowitz, A. E. (2006). One-step production of optimized Fe-Ga particles by spark erosion. Applied Physics Letters, 89(14), [142506]. https://doi.org/10.1063/1.2358825