Effect of Magnetic Contact on Macroscopic Permeability of Soft Magnetic Composite

Effect of Magnetic Contact on Macroscopic Permeability of Soft Magnetic Composite

It is revealed that the contact of magnetic particles in soft magnetic composite (SMC) significantly increases the macroscopic permeability. It is shown that Ollendorff's formula, which assumes homogenous magnetic particles and insulation layers, underestimates the macroscopic permeability of S...

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Veröffentlicht in:IEEE transactions on magnetics 2016-03, Vol.52 (3), p.1-4
Hauptverfasser: Ito, Yasuhisa, Igarashi, Hajime, Suzuki, Michiaki, Iwasaki, Yoshiki, Kawano, Kenji
Format: Artikel
Sprache:eng
Schlagworte:
Atmospheric measurements
Contact
finite element analysis
homogenization
Insulation
magnetic circuit
Magnetic circuits
Magnetic flux
Magnetic particles
Magnetic permeability
Magnetic resonance imaging
Magnetism
Mathematical models
Ollendorff's formula
Particulate composites
Permeability
Soft magnetic composite
Soft magnetic materials
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Beschreibung
Zusammenfassung:It is revealed that the contact of magnetic particles in soft magnetic composite (SMC) significantly increases the macroscopic permeability. It is shown that Ollendorff's formula, which assumes homogenous magnetic particles and insulation layers, underestimates the macroscopic permeability of SMC. It is suggested that the excess in the permeability is due to the local contacts among the magnetic particles. The effect of the magnetic contact is evaluated using a magnetic circuit model.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2015.2489227