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
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

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.

Alternate JournalAppl. Phys. Lett.