Magnetic domains in magnetostrictive Fe-Ga alloys

TitleMagnetic domains in magnetostrictive Fe-Ga alloys
Publication TypeJournal Article
Year of Publication2008
AuthorsXing Q, Lograsso TA
Journal TitleApplied Physics Letters
Volume93
Pages182501
Date Published11/01
Type of ArticleArticle
ISBN Number0003-6951
Accession NumberISI:000260778100038
Keywordsalloying additions, anisotropy, EXTRINSIC MAGNETOSTRICTION, gallium alloys, iron alloys, magnetic domain walls, magnetostriction, precipitation, STRUCTURALLY HETEROGENEOUS MODEL
Abstract

Lorentz microscopy was applied to the observation of magnetic domains in iron-gallium (Fe-Ga) alloys. Results did not show any link between the magnetic domains and the magnetostriction enhancement by Ga addition, but did reveal that the drastic decrease in magnetostriction for Fe-31.2 at. % Ga was due to the presence of large scale precipitates. Magnetic domain features did not change in the alloys of A2, D0(3), A2+D0(3), A2+B2+D0(3), and A2+fine scale precipitates. Large scale precipitates within the slow-cooled Fe-31.2 at. % Ga affected both the distribution and wall motion of magnetic domains.

DOI10.1063/1.3013575
Alternate JournalAppl. Phys. Lett.