Title

Altering magnetostrictive strain pathways via morphology of spontaneously aligned domains

Document Type

Article

Publication Date

10-3-2011

Department

Department of Materials Science and Engineering

Abstract

In contrast to the use of a mazelike (randomly oriented) magnetic domain morphology or the application of a prestress, it is shown that spontaneously aligned domain morphology is capable of reducing the switching fields and producing a variety of magnetostriction strain pathways that are otherwise not possible by conventional materials approaches (composition and microstructure) alone. Using phase field micromagnetic microelastic modeling, the underlying magnetic domain evolution and the resultant strain behavior of giant magnetostriction materials with uniaxial magnetic anisotropy is explained by analyzing elastostatic interactions across domain walls arising from magnetostriction-induced strain mismatch. © 2011 American Physical Society.

Publication Title

Physical Review B - Condensed Matter and Materials Physics

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