Permeability of soft magnetic composites from flakes of nanocrystalline ribbon

Author

Mazaleyrat, Frédéric ; Léger, Valérie ; Lebourgeois, Richard ; Barrué, Richard

Author_Institution

SATIE, Ecole Normale Superieure de Cachan, France

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3132

Lastpage

3134

Abstract

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 μm. 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 μm).

Keywords

amorphous magnetic materials; composite materials; ferromagnetic materials; magnetic particles; magnetic permeability; nanostructured materials; particle size; powder cores; soft magnetic materials; 80 to 1000 micron; effective permeability; magnetic permeability; magnetoelastic anisotropy; magnetomotive force; nanocrystalline ribbon flakes; nonmagnetic grain boundary model; perpendicular reluctances; plane reluctances; powder cores; soft magnetic composites; static permeability; Grain boundaries; Magnetic cores; Magnetic materials; Magnetic separation; Magnetostriction; Nanostructured materials; Permeability; Powders; Soft magnetic materials; Switched-mode power supply;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802419

Filename

1042474