A magnetostrictive composite material exhibiting the capacity for large magnetostrictive strains was created by suspending magnetic wires in a soft polymer matrix. Magnetostrictive strains as large as 20% were found in an applied field of 600 Oe for this proof of concept composite. Our analysis indicates that reversible strains of over 6% are reasonable for this specific composite. The large values of magnetostriction are due to the mechanical rotation of the wires in the polymer matrix.
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The authors acknowledge useful conversations with Professor Bethanie Stadler and Professor Richard James. We also wish to thank Professor James for suggesting revisions to the manuscript. One of the authors, A.H., thanks the UROP Program of the University of Minnesota for support. The authors gratefully acknowledge support of this research by the National Science Foundation under Grant No. DMR 1609782.
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