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:
Jun. 28, 2011
Filed:
Sep. 19, 2007
Kazuaki Ikarashi, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Kenichi Tanaka, Niigata-ken, JP;
Kazumasa Nishimura, Niigata-ken, JP;
Masamichi Saito, Niigata-ken, JP;
Yosuke Ide, Niigata-ken, JP;
Ryo Nakabayashi, Niigata-ken, JP;
Yoshihiro Nishiyama, Niigata-ken, JP;
Hidekazu Kobayashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Kazuaki Ikarashi, Niigata-ken, JP;
Eiji Umetsu, Niigata-ken, JP;
Kenichi Tanaka, Niigata-ken, JP;
Kazumasa Nishimura, Niigata-ken, JP;
Masamichi Saito, Niigata-ken, JP;
Yosuke Ide, Niigata-ken, JP;
Ryo Nakabayashi, Niigata-ken, JP;
Yoshihiro Nishiyama, Niigata-ken, JP;
Hidekazu Kobayashi, Niigata-ken, JP;
Naoya Hasegawa, Niigata-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A tunnel magnetoresistive sensor includes a pinned magnetic layer, an insulating barrier layer formed of Mg—O, and a free magnetic layer. A barrier-layer-side magnetic sublayer constituting at least part of the pinned magnetic layer and being in contact with the insulating barrier layer includes a first magnetic region formed of CoFeB or FeB and a second magnetic region formed of CoFe or Fe. The second magnetic region is disposed between the first magnetic region and the insulating barrier layer.