COMPOSITE MAGNETIC MATERIAL, MAGNET COMPRISING THE MATERIAL, MOTOR USING THE MAGNET, AND METHOD OF MANUFACTURING THE COMPOSITE MAGNETIC MATERIAL

A composite magnetic material includes a soft magnetic phase including a magnetic material containing a ferromagnetic material including Fe or Co as a main component and a plurality of hard magnetic particles present and dispersed in a form of islands in the soft magnetic phase. The hard magnetic pa...

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Bibliographische Detailangaben
Hauptverfasser: Ootsuka, Masanobu, Nishimura, Naoki, Sasaguri, Daisuke
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A composite magnetic material includes a soft magnetic phase including a magnetic material containing a ferromagnetic material including Fe or Co as a main component and a plurality of hard magnetic particles present and dispersed in a form of islands in the soft magnetic phase. The hard magnetic particles have an average particle size of 2 nm or more and include a magnetic material containing a ferrimagnetic material or an antiferromagnetic material as a main component while they are present with an average inter-particle distance of 100 nm or less in the soft magnetic phase. The composite magnetic material has excellent magnetic properties and can be made into a lightweight magnet to be used e.g. in a motor of an aircraft.