Permeability of soft magnetic composites from flakes of nanocrystalline ribbon

Permeability of soft magnetic composites from flakes of nanocrystalline ribbon

The permeability of powder cores is usually modeled using a nonmagnetic grain boundary model (NMGB), which is not satisfying in the case of composites based on ground nanocrystalline ribbon, especially for particles larger than several 100 /spl mu/m. An improvement of the NMGB model is proposed wher...

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Veröffentlicht in:IEEE transactions on magnetics 2002-09, Vol.38 (5), p.3132-3134
Hauptverfasser: Mazaleyrat, F., Leger, V., Lebourgeois, R., Barrue, R.
Format: Artikel
Sprache:eng
Schlagworte:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fe and its alloys
Grain boundaries
Magnetic cores
Magnetic materials
Magnetic properties and materials
Magnetic separation
Magnetism
Magnetostriction
Nanostructured materials
Permeability
Physics
Powders
Soft magnetic materials
Studies of specific magnetic materials
Switched-mode power supply
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Beschreibung
Zusammenfassung:The permeability of powder cores is usually modeled using a nonmagnetic grain boundary model (NMGB), which is not satisfying in the case of composites based on ground nanocrystalline ribbon, especially for particles larger than several 100 /spl mu/m. An improvement of the NMGB model is proposed where both in plane and perpendicular reluctances are taken into account. This model is consistent with our experimental results as well as other authors' results in a very large range of packing fractions (30%-92%) and particle sizes (80-1000 /spl mu/m).
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2002.802419