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. 24, 2012
Filed:
Jun. 04, 2008
Masayuki Takagishi, Tokyo, JP;
Kenichiro Yamada, Tokyo, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Junichi Akiyama, Kanagawa-ken, JP;
Tomomi Funayama, Saitama-ken, JP;
Masahiro Takashita, Kanagawa-ken, JP;
Mariko Shimizu, Kanagawa-ken, JP;
Masayuki Takagishi, Tokyo, JP;
Kenichiro Yamada, Tokyo, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Junichi Akiyama, Kanagawa-ken, JP;
Tomomi Funayama, Saitama-ken, JP;
Masahiro Takashita, Kanagawa-ken, JP;
Mariko Shimizu, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A magnetic recording head includes a recording magnetic pole, and a spin oscillation device including a first magnetic layer having at least one magnetic material layer, a second magnetic layer having at least one magnetic material layer, and a first nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The first magnetic layer and the second magnetic layer are antiferromagnetically coupled and/or magnetostatically coupled to each other. The first magnetic layer and the second magnetic layer are laminated in a direction generally parallel to a medium facing surface and generally parallel to a side surface of the recording magnetic pole intersecting with the medium facing surface.