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:
Feb. 24, 2009
Filed:
Jul. 12, 2005
Takuya Seino, Tokyo, JP;
Fumihito Koike, Tokyo, JP;
Naoya Hasegawa, Tokyo, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A magnetic sensing element and exchange coupling film is disclosed. The magnetic sensing element has a free magnetic layer, nonmagnetic material layers disposed on the top and bottom of the free magnetic layer, pinned magnetic layers disposed on the top of one nonmagnetic material layer and on the bottom of the other nonmagnetic material layer, and antiferromagnetic layers containing IrMn disposed on the top of one pinned magnetic layer and on the bottom of the other pinned magnetic layer. The magnetization of the free magnetic layer is aligned in a direction orthogonal to the magnetization direction of the pinned magnetic layers. The exchange coupling film is formed by the antiferromagnetic layer and the pinned magnetic layer above the free magnetic layer. At least an interfacial portion of the ferromagnetic layer which is adjacent to the antiferromagnetic layer contains CoFewherein 30%≦x≦90% in atomic percent.