磁性材料の製造方法 - Toyota Central R & D Labs.

Title:

磁性材料の製造方法

Document Type and Number:

Japanese Patent JP5057208

Kind Code:

B2

Abstract:

To provide a magnetic material which carries magnetic nanoparticles inside spherical silica-based mesoporous bodies and can make the magnetic nanoparticles exert a strong ferromagnetism, and a manufacturing method of magnetic material capable of manufacturing the magnetic material in good efficiency.

The magnetic material comprises the spherical silica-based mesoporous bodies having an average particle size of 0.01-3 μm and a central pore diameter of 2.6 nm or larger, and ferromagnetic nanoparticles carried in the spherical silica-based mesoporous bodies. The ferromagnetic nanoparticle is selected from the group consisting of single metals having ferromagnetism, CuAu type ferromagnetic ordered alloys, Cu3Au type ferromagnetic ordered alloys and rear earth-based ferromagnetic alloys.

Inventors:

Mamoru Mizutani
Tadashi Nakamura
Kazuhisa Yano

Application Number:

JP2006342701A

Publication Date:

October 24, 2012

Filing Date:

December 20, 2006

Export Citation:

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Assignee:

Toyota Central R & D Labs.

International Classes:

B22F9/24; B22F1/00; B22F9/26; C01B33/18; H01F1/055; H01F1/06; H01F1/09; H01F1/14; H01F1/33

Domestic Patent References:

JP10081507A
JP2006306707A
JP2002087810A
JP2004099381A

Attorney, Agent or Firm:

Patent Business Corporation St. Crest International Patent Office

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Next Patent: JPS5057209