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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 10468174 B1

PDFFull Text
Date of Patent:
Nov. 05, 2019

Filed:

Sep. 15, 2017

Magnetic core and coil component

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Toshio Mihara, Minato-ku, JP;

Tetsuroh Katoh, Minato-ku, JP;

Kazunori Nishimura, Minato-ku, JP;

Shin Noguchi, Minato-ku, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Tuyen T Nguyen

Int. Cl.
CPC ...
H01F 27/28 (2006.01); H01F 27/255 (2006.01); B22F 1/00 (2006.01); C22C 38/00 (2006.01); H01F 1/147 (2006.01); H01F 1/24 (2006.01); H01F 1/33 (2006.01); H01F 17/04 (2006.01);
U.S. Cl.
CPC ...
H01F 27/255 (2013.01); B22F 1/00 (2013.01); C22C 38/00 (2013.01); H01F 1/147 (2013.01); H01F 1/14791 (2013.01); H01F 1/24 (2013.01); H01F 1/33 (2013.01); H01F 17/04 (2013.01); H01F 27/28 (2013.01);
Abstract

Provided are a magnetic core having a high initial permeability and a coil component including the same. The magnetic core has an X-ray diffraction spectrum of the magnetic core measured using Cu-Kα characteristic X-rays, wherein a peak intensity ratio (P1/P2) of a peak intensity P1 of a diffraction peak of an Fe oxide having a corundum structure appearing in a vicinity of 2θ=33.2° to a peak intensity P2 of a diffraction peak of the Fe-based alloy having a bcc structure appearing in a vicinity of 2θ=44.7° is 0.015 or less; and in the X-ray diffraction spectrum, a peak intensity ratio (P3/P2) of a peak intensity P3 of a superlattice peak of an FeAl ordered structure appearing in a vicinity of 2θ=26.6° to the peak intensity P2 is 0.015 or more and 0.050 or less.

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