Magnetic properties and domain structures in stress-annealed FeZrB-(Cu)-(Nb) nanocrystalline ribbons

Citation
A. Benchabi et al., Magnetic properties and domain structures in stress-annealed FeZrB-(Cu)-(Nb) nanocrystalline ribbons, EPJ-APPL PH, 15(3), 2001, pp. 173-176
Citations number
13
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS
ISSN journal
12860042 → ACNP
Volume
15
Issue
3
Year of publication
2001
Pages
173 - 176
Database
ISI
SICI code
1286-0042(200109)15:3<173:MPADSI>2.0.ZU;2-I
Abstract
Magnetic properties of nanocrystalline FeZrB-(Cu)-(Nb) compared to FeSiBCuN b are reported. Observations of domain patterns by magneto-optical Kerr eff ect (MOKE) method presented herein highlight qualitatively the incidence of stress-annealing on the induced anisotropy in soft magnetic materials. Tra nsverse fine domains found in FeSiBCuNb alloys are consistent to a magneto- elastic interpretation of the stress-induced anisotropy. Nevertheless, it i s not the case for FeZrB-(Cu)-(Nb) family where we observe a pronounced lon gitudinal induced anisotropy. According to the so-called "back stress effec t" advanced by Herzer, the negative lambda (s) of bcc alpha -Fe grains, as well of bcc alpha -FeSi grains, should yield transverse anisotropy. Nowaday s, this surprising feature is not still clear. For a technical standpoint, stress-induced anisotropy is interesting for new magnetic components in pow er electronics.