Eur. Phys. J. AP
Volume 15, Number 3, September 2001
|Page(s)||173 - 176|
|Section||Surfaces, Interfaces and Films|
|Published online||15 September 2001|
Magnetic properties and domain structures in stress-annealed FeZrB-(Cu)-(Nb) nanocrystalline ribbons
Magnetic Materials team, LESiR/CNAM-ENS Cachan 61, avenue Pr. Wilson, 94235 Cachan Cedex, France
Corresponding author: email@example.com
Revised: 10 May 2001
Accepted: 10 May 2001
Published online: 15 September 2001
Magnetic properties of nanocrystalline FeZrB-(Cu)-(Nb) compared to FeSiBCuNb are reported. Observations of domain patterns by magneto-optical Kerr effect (MOKE) method presented herein highlight qualitatively the incidence of stress-annealing on the induced anisotropy in soft magnetic materials. Transverse fine domains found in FeSiBCuNb alloys are consistent to a magneto-elastic interpretation of the stress-induced anisotropy. Nevertheless, it is not the case for FeZrB-(Cu)-(Nb) family where we observe a pronounced longitudinal induced anisotropy. According to the so-called “back stress effect” advanced by Herzer, the negative of bcc α-Fe grains, as well of bcc α-FeSi grains, should yield transverse anisotropy. Nowadays, this surprising feature is not still clear. For a technical standpoint, stress-induced anisotropy is interesting for new magnetic components in power electronics.
PACS: 75.60.Ch – Domain walls and domain structure / 75.60.Ej – Magnetization curves, hysteresis, Barkhausen, Barkhausen and related effects / 81.07.Bc – Nanocrystalline materials
© EDP Sciences, 2001
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