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:
Apr. 26, 2011
Filed:
Oct. 03, 2008
Yuichi Ohsawa, Kanagawa-ken, JP;
Shiho Nakamura, Kanagawa-ken, JP;
Hirofumi Morise, Kanagawa-ken, JP;
Satoshi Yanagi, Kanagawa-ken, JP;
Daisuke Saida, Tokyo, JP;
Yuichi Ohsawa, Kanagawa-ken, JP;
Shiho Nakamura, Kanagawa-ken, JP;
Hirofumi Morise, Kanagawa-ken, JP;
Satoshi Yanagi, Kanagawa-ken, JP;
Daisuke Saida, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A magnetic recording element includes a multilayer having a surface and a pair of electrodes. The multilayer has a first magnetic fixed layer whose magnetization is substantially fixed in a first direction substantially perpendicular to the surface. The multilayer also has a second magnetic fixed layer whose magnetization is substantially fixed in a second direction opposite to the first direction substantially perpendicular to the surface. A third magnetic layer is provided between the first and second magnetic layers. The direction of magnetization of the third ferromagnetic layer is variable. A first intermediate layer is provided between the first and the third magnetic layers. A second intermediate layer is provided between the second and the third magnetic layers. The pair of electrodes is capable of supplying an electric current flowing in a direction substantially perpendicular to the surface to the multilayer. The sectional area taken parallel to the surface at a thickness midpoint of the first magnetic layer is larger than that of the second magnetic layer.