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.:
Date of Patent:
Apr. 29, 2008
Filed:
May. 31, 2005
Cpp giant magnetoresistive head including pinned magnetic layer that extends in the height direction
Yasuo Hayakawa, Tokyo, JP;
Yoshihiro Nishiyama, Tokyo, JP;
Digo Aoki, Tokyo, JP;
Masamichi Saito, Tokyo, JP;
Naohiro Ishibashi, Tokyo, JP;
Kenji Honda, Tokyo, JP;
Yasuo Hayakawa, Tokyo, JP;
Yoshihiro Nishiyama, Tokyo, JP;
Digo Aoki, Tokyo, JP;
Masamichi Saito, Tokyo, JP;
Naohiro Ishibashi, Tokyo, JP;
Kenji Honda, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A CPP giant magnetoresistive head includes a lower shield layer; an upper shield layer; and a giant magnetoresistive element (GMR) between the lower shield layer and the upper shield layer. The GMR includes a nonmagnetic material layer; a pinned magnetic layer; and a free magnetic layer. The pinned layer and the free layer are laminated with the nonmagnetic layer provided therebetween. A current flows perpendicularly to a film plane of the GMR, the pinned magnetic layer extends in the height direction longer than in a track-width direction and includes a first portion in the GMR. The first portion is disposed above or below the nonmagnetic layer and the free layer. A second portion is behind the nonmagnetic layer and the free layer in the height direction. The first and second portions are in the same plane. The width of the pinned layer in the track-width direction in the first portion is greater than that in the second portion.