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:
Jul. 17, 2012
Filed:
Nov. 09, 2009
Kan Yasui, Kodaira, JP;
Masato Shiimoto, Kanagawa, JP;
Takeshi Nakagawa, Kanagawa, JP;
Hiroyuki Katada, Kanagawa, JP;
Nobuo Yoshida, Kanagawa, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
Kan Yasui, Kodaira, JP;
Masato Shiimoto, Kanagawa, JP;
Takeshi Nakagawa, Kanagawa, JP;
Hiroyuki Katada, Kanagawa, JP;
Nobuo Yoshida, Kanagawa, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
In one embodiment, a differential-type magnetic read head includes a differential-type magneto-resistive-effect film formed on a substrate, and a pair of electrodes for applying current in a direction perpendicular to a film plane of the film. The film includes a first and second stacked film, each having a pinned layer, an intermediate layer, and a free layer, with the second stacked film being formed on the first stacked film. A side face in a track width direction of the film is shaped to have an inflection point at an intermediate position in a thickness direction of the film, and the side face is shaped to be approximately vertical to the substrate in an upward direction of the substrate from the inflection point. Also, the side face is shaped to be gradually increased in track width as approaching the substrate in a downward direction of the substrate from the inflection point.