Giant reversible magnetostriction in a ferromagnet-polymer composite

Thomas I. Richardson, Austin Schleusner, E. Dan Dahlberg

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A magnetostrictive ferromagnet-polymer composite consisting of steel wires suspended in a polymer matrix has been developed that exhibits large reversible magnetostrictive strain in relatively low magnetic fields. The strain for a fixed field is a nonmonotonic function of wire loading for the longer wires investigated, and the strain for a given wire loading increases with decreasing the wire length. Within the limits of this study, a maximum saturation strain of 60.2% in a 7.5 kOe field was observed with a wire length of 0.50 cm and a wire volume fraction of approximately 0.2. No degradation in strain was observed over the maximum number of 50 expansion cycles.

Original languageEnglish (US)
Article number055109
JournalJournal of Applied Physics
Issue number5
StatePublished - Aug 7 2020

Bibliographical note

Funding Information:
This work was supported by NSF Grant No. DMR 1609782 and the University of Minnesota’s Undergraduate Research Opportunities Program.

Publisher Copyright:
© 2020 Author(s).


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