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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9362033 B1

PDFFull Text
Date of Patent:
Jun. 07, 2016

Filed:

Jul. 14, 2014

Magnetic material, method for producing magnetic material, and inductor element

Applicant:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Inventors:

Tomohiro Suetsuna, Kanagawa, JP;

Seiichi Suenaga, Kanagawa, JP;

Toshihide Takahashi, Kanagawa, JP;

Tomoko Eguchi, Tokyo, JP;

Koichi Harada, Tokyo, JP;

Yasuyuki Hotta, Tokyo, JP;

Assignee:

KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Carol M Koslow

Int. Cl.
CPC ...
B22F 1/02 (2006.01); H01F 1/01 (2006.01); H01F 1/24 (2006.01); H01F 1/33 (2006.01); C22C 29/12 (2006.01); C22C 32/00 (2006.01); H01F 41/00 (2006.01); H01F 1/153 (2006.01); H01F 41/02 (2006.01); B22F 1/00 (2006.01); B82Y 25/00 (2011.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
H01F 1/01 (2013.01); B22F 1/02 (2013.01); C22C 29/12 (2013.01); C22C 32/001 (2013.01); H01F 1/15333 (2013.01); H01F 1/24 (2013.01); H01F 1/33 (2013.01); H01F 41/005 (2013.01); B22F 1/0018 (2013.01); B22F 2998/10 (2013.01); B82Y 25/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); H01F 1/153 (2013.01); H01F 41/0246 (2013.01); Y10S 977/774 (2013.01); Y10S 977/778 (2013.01); Y10S 977/81 (2013.01); Y10S 977/838 (2013.01); Y10S 977/89 (2013.01); Y10T 428/12181 (2015.01); Y10T 428/2991 (2015.01); Y10T 428/325 (2015.01);
Abstract

A magnetic material is disclosed, which includes magnetic particles containing at least one magnetic metal selected from the group including Fe, Co and Ni, and at least one non-magnetic metal selected from Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare earth elements, Ba and Sr; a first coating layer of a first oxide that covers at least a portion of the magnetic particles; oxide particles of a second oxide that is present between the magnetic particles and constitutes an eutectic reaction system with the first oxide; and an oxide phase that is present between the magnetic particles and has an eutectic structure of the first oxide and the second oxide.

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