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:
Oct. 07, 2008
Filed:
Jan. 12, 2005
Kazuaki Ikarashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Fumihito Koike, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Kazuaki Ikarashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Fumihito Koike, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A nonmagnetic material-noncontact layer forming a fixed magnetic layer is formed using CoFe, a nonmagnetic material-contact layer is formed using Co, and an NOL (Nano-Oxide Layer) is provided between the nonmagnetic material-noncontact layer and the nonmagnetic material-contact layer. In addition, the average film thickness of the nonmagnetic material-contact layer is set in the range of 16 to 19 Å. Accordingly, compared to a three-layered structure composed of CoFe, an NOL, and CoFe or a three-layered structure composed of Co, an NOL, and Co, which has been conventionally used, the rate (ΔR/R) of change in resistance and the unidirectional exchange bias magnetic field (Hex*) can both be improved.