A theory of magnetostriction oriented towards applications

Antonio DeSimone, Richard D. James

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

A simplified theory of magnetostriction, derived from micromagnetics, is presented. The theory is designed to provide a systematic, yet manageable, quantitative tool in the design of magnetostrictive actuators, by making the "calculation" of the overall response of magnetostrictive specimens subjected to applied magnetic fields and loads a feasible task. Indeed, for simple geometries, the computation of energy minimizing domain patterns is reduced to a finite dimensional problem. As an application of the theory, a mechanism explaining the anisotropic magnetostriction observed in Terfenol-D rods, based on computed energetically optimal domain arrangements, is proposed.

Original languageEnglish (US)
Pages (from-to)5706-5708
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2B
DOIs
StatePublished - Apr 15 1997

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