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. 06, 2004
Filed:
Sep. 13, 2000
Yoshihiko Kakihara, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A magnetoresistive element includes a multilayered film comprising a magnetic detecting layer having a magnetoresistive effect, a pair of first antiferromagnetic layers in contact with the magnetic detecting layer of the multilayered film at a predetermined gap in the track width direction, the first antiferromagnetic layers aligning the magnetization direction of the magnetic detecting layer, and a pair of conductive layers in contact with the pair of first antiferromagnetic layers, the pair of conductive layers applying a detecting current to the multilayered film. The first antiferromagnetic layers are composed of an antiferromagnetic material having higher resistivity than that of the conductive layers. The conductive layers are superimposed with the corresponding first antiferromagnetic layers and are in contact with the magnetic detecting layer in a range of the predetermined gap. The distance between the pair of conductive layers defines a track width when the multilayered film detects an external magnetic field.