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Ab initio studies of the effect of nanoclusters on magnetostriction of Fe1-xGax alloys

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6 Author(s)
Wang, Hui ; Department of Civil and Environmental Engineering, University of California, Irvine, California 92697-2175, USA ; Zhang, Y.N. ; Yang, Teng ; Zhang, Z.D.
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Using the density functional calculations, we investigated the effect of nanoprecipitation on the magnetostriction of Fe1-xGax alloys. While the B2-like FeGa clusters undergo slight tetragonal distortion, D03-like FeGa clusters remain cubic in the Fe matrix. Moreover, we found that B2-like nanostructures produce negative magnetostriction, whereas D03-like nanostructures give small positive magnetostriction in the hypothetical inhomogeneous structures. Therefore, the formation of nanoscale precipitates cannot be the reason for the extraordinary enhancement of magnetostriction of Fe1-xGax alloys.

Published in:

Applied Physics Letters  (Volume:97 ,  Issue: 26 )

Date of Publication:

Dec 2010

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