Giant reversible magnetostriction in a ferromagnet-polymer composite

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

Research output: Contribution to journalArticle

Abstract

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
Volume128
Issue number5
DOIs
StatePublished - Aug 7 2020

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