Magnetic properties of polymer bonded soft magnetic particles for various filler fractions

Samples of polypropylene filled with iron powder from 20 to 85 vol % filler content were produced and examined. The permeabilities of the materials versus the magnetic field strength (up to 50 kA ∕ m ) were recorded as well as the low field and maximum permeability and the coercivity versus filler f...

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Veröffentlicht in:Journal of applied physics 2007-01, Vol.101 (2), p.023907-023907-8
Hauptverfasser: Anhalt, M., Weidenfeller, B.
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description Samples of polypropylene filled with iron powder from 20 to 85 vol % filler content were produced and examined. The permeabilities of the materials versus the magnetic field strength (up to 50 kA ∕ m ) were recorded as well as the low field and maximum permeability and the coercivity versus filler fractions were measured and compared with existing mathematical models. Investigations of the permeability as well as of the coercivity of two materials containing 85 vol % filler material varying in mean particle size versus frequency ( 1 Hz ⩽ f ⩽ 2000 Hz ) and magnetic field strength have been carried out. Results show permeabilities μ low > 100 for highest filled materials with low coercivities. Measurement data were compared with theoretical models.
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title Magnetic properties of polymer bonded soft magnetic particles for various filler fractions
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