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:
May. 07, 2013
Filed:
Oct. 08, 2010
Thin film magnetic head including spin-valve film with free layer magnetically connected with shield
Takumi Yanagisawa, Tokyo, JP;
Yasushi Nishioka, Tokyo, JP;
Takahiko Machita, Tokyo, JP;
Satoshi Miura, Tokyo, JP;
Takayasu Kanaya, Tokyo, JP;
Kenzo Makino, Tokyo, JP;
Yoshikazu Sawada, Tokyo, JP;
Takekazu Yamane, Tokyo, JP;
Naomichi Degawa, Tokyo, JP;
Kosuke Tanaka, Tokyo, JP;
Soji Koide, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Takumi Yanagisawa, Tokyo, JP;
Yasushi Nishioka, Tokyo, JP;
Takahiko Machita, Tokyo, JP;
Satoshi Miura, Tokyo, JP;
Takayasu Kanaya, Tokyo, JP;
Kenzo Makino, Tokyo, JP;
Yoshikazu Sawada, Tokyo, JP;
Takekazu Yamane, Tokyo, JP;
Naomichi Degawa, Tokyo, JP;
Kosuke Tanaka, Tokyo, JP;
Soji Koide, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A thin film magnetic head includes; an MR film that includes a pinned layer of which a magnetization direction is pinned, a free layer of which a magnetization direction varies, and a spacer that is disposed therebetween; a pair of shields that are disposed on both sides sandwiching the MR film in a direction orthogonal to a film surface of the MR film; and an anisotropy providing layer that provides anisotropy to a first shield so that the first shield is magnetized in a desired direction, and that is disposed on an opposite side from the MR film with respect to the first shield. The MR film includes a magnetic coupling layer that is disposed between the first shield and the free layer and that magnetically couples the first shield with the free layer.