Processing of magnetic properties of nearly zero magnetostrictive glass-coated microwires by current annealing

The effect of dc current annealing (with length up to 80 min and current density j up to 250 A/mm/sup 2/), with or without dc axial magnetic field, on the magnetic properties of Co/sub 55.7/Fe/sub 5.9/Ni/sub 9.9/B/sub 17.7/Si/sub 10.8/ and Co/sub 68/Mn/sub 7/Si/sub 10/B/sub 15/ glass-coated microwir...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2003-11, Vol.39 (6), p.3613-3615
Main Authors: Zhukova, V.A., Zhukov, A.P., Gonzalez, J., Blanco, J.M., Vazquez, M.
Format: Article
Language:English
Subjects:
Amorphous and nanocrystalline magnetic materials
quasicrystals
Amorphous and quasicrystalline magnetic materials
Annealing
Applied sciences
Coercive force
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Current density
Direct current
Exact sciences and technology
Hysteresis loops
Iron
Magnetic anisotropy
Magnetic fields
Magnetic permeability
Magnetic properties
Magnetic properties and materials
Magnetism
Magnetization
Magnetostriction
Metals. Metallurgy
Perpendicular magnetic anisotropy
Physics
Residual stress
Studies of specific magnetic materials
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Summary:The effect of dc current annealing (with length up to 80 min and current density j up to 250 A/mm/sup 2/), with or without dc axial magnetic field, on the magnetic properties of Co/sub 55.7/Fe/sub 5.9/Ni/sub 9.9/B/sub 17.7/Si/sub 10.8/ and Co/sub 68/Mn/sub 7/Si/sub 10/B/sub 15/ glass-coated microwires has been studied. Such thermal treatments, especially performed under magnetic field, modify the magnetic parameters, such as coercivity, remanent magnetization, magnetic permeability, and overall shape of the hysteresis loops. Such phenomenology can be interpreted by considering the noticeable longitudinal magnetic anisotropy induced by the combined effects of the magnetic field and internal stresses arising from the coating during the thermal treatment.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2003.815886