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, 2005
Filed:
Nov. 30, 2000
Kenichi Tanaka, Niigata-ken, JP;
Masamichi Saito, Niigata-ken, JP;
Yosuke Ide, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Yoshihiko Kakihara, Niigata-ken, JP;
Kenji Honda, Niigata-ken, JP;
Kenichi Tanaka, Niigata-ken, JP;
Masamichi Saito, Niigata-ken, JP;
Yosuke Ide, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Yoshihiko Kakihara, Niigata-ken, JP;
Kenji Honda, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a spin valve thin film magnetic element including a laminate in which an antiferromagnetic layer, a pinned magnetic layer provided in contact with the antiferromagnetic layer so that the magnetization direction is pinned by an exchange coupling magnetic field with the antiferromagnetic layer, a nonmagnetic conductive layer provided in contact with the pinned magnetic layer, a second free magnetic layer provided in contact with the nonmagnetic conductive layer, a nonmagnetic intermediate layer provided in contact with the second free magnetic layer, a first free magnetic layer provided in contact with the nonmagnetic intermediate layer and antiferromagnetically coupled with the second free magnetic layer to form a ferrimagnetic state together with the second free magnetic layer, and a backed layer provided in contact with the first free magnetic layer and having higher conductivity than the first free magnetic layer are laminated. The present invention also provides a magnetic head using the spin valve thin film magnetic element.