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:
Jan. 25, 2011
Filed:
Jan. 15, 2008
Tsutomu Chou, Tokyo, JP;
Yoshihiro Tsuchiya, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
Tsutomu Chou, Tokyo, JP;
Yoshihiro Tsuchiya, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Kiyoshi Noguchi, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetoresistive device comprising a magnetoresistive unit, an upper shield layer and a lower shield layer stacked such that the magnetoresistive unit is held between them. The magnetoresistive unit comprises a nonmagnetic metal intermediate layer, a first ferromagnetic layer and a second ferromagnetic layer stacked with the nonmagnetic metal intermediate layer in the middle. When no bias magnetic field is applied, the first and second ferromagnetic layers have mutually antiparallel magnetizations. The magnetoresistive unit further comprises first and second side shield layers, and first and second biasing layers located to be magnetically coupled to the first and second side shield layers, wherein magnetic fluxes fed from the bias magnetic fields pass through the first and second side shield layers positioned in proximity to the magnetoresistive unit such that the magnetizations of the first and second ferromagnetic layers become substantially orthogonal to each other.