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. 06, 2008
Filed:
Nov. 08, 2005
Kazuaki Ikarashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Kazumi Matsuzaka, Niigata-ken, JP;
Takuya Seino, Tokyo, JP;
Kazuaki Ikarashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Kazumi Matsuzaka, Niigata-ken, JP;
Takuya Seino, Tokyo, JP;
Alps Electric Co., Ltd, Tokyo, JP;
Abstract
An exchange-coupled film includes a ferromagnetic layer and an antiferromagnetic layer disposed on each other, the magnetization direction of the ferromagnetic layer being pinned in one direction by an exchange coupling magnetic field generated at the interface between the ferromagnetic layer and the antiferromagnetic layer, wherein the antiferromagnetic layer is composed of IrMn(wherein 2 atomic percent≦z≦80 atomic percent), the ferromagnetic layer has a two-layer structure including a CoFelayer having a face-centered cubic structure (wherein 80 atomic percent≦y≦100 atomic percent), the CoFelayer being in contact with the antiferromagnetic layer, and an FeColayer (wherein x≧30 atomic percent), the FeColayer being disposed on the CoFelayer, and the thickness of the FeColayer is 30% to 90% of the total thickness of the ferromagnetic layer.