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

doi:10.1063/1.2358825

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 language	English (US)
Article number	142506
Journal	Applied Physics Letters
Volume	89
Issue number	14
DOIs	https://doi.org/10.1063/1.2358825
State	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2358825

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title = "One-step production of optimized Fe-Ga particles by spark erosion",

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 M{\"o}ssbauer 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.",

author = "Hong, {J. I.} and Solomon, {V. C.} and David Smith and Parker, {F. T.} and Summers, {E. M.} and Berkowitz, {A. E.}",

note = "Funding Information: This work was supported by ONR Grant No. N00014-01-1-0758. The authors acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.",

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language = "English (US)",

volume = "89",

journal = "Applied Physics Letters",

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T1 - One-step production of optimized Fe-Ga particles by spark erosion

AU - Hong, J. I.

AU - Solomon, V. C.

AU - Smith, David

AU - Parker, F. T.

AU - Summers, E. M.

AU - Berkowitz, A. E.

N1 - Funding Information: This work was supported by ONR Grant No. N00014-01-1-0758. The authors acknowledge the use of facilities in the John M. Cowley Center for High Resolution Electron Microscopy at Arizona State University.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

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

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