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:
Mar. 07, 2006
Filed:
Oct. 10, 2001
Hideaki Fukuzawa, Kanagawa-ken, JP;
Yuzo Kamiguchi, Kanagawa-ken, JP;
Katsuhiko Koui, Kanagawa-ken, JP;
Shin-ichi Nakamura, Kanagawa-ken, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Kazuhiro Saito, Tokyo, JP;
Hiromi Fuke, Kanagawa-ken, JP;
Masatoshi Yoshikawa, Kanagawa-ken, JP;
Susumu Hashimoto, Kanagawa-ken, JP;
Masashi Sahashi, Kanagawa-ken, JP;
Hideaki Fukuzawa, Kanagawa-ken, JP;
Yuzo Kamiguchi, Kanagawa-ken, JP;
Katsuhiko Koui, Kanagawa-ken, JP;
Shin-ichi Nakamura, Kanagawa-ken, JP;
Hitoshi Iwasaki, Kanagawa-ken, JP;
Kazuhiro Saito, Tokyo, JP;
Hiromi Fuke, Kanagawa-ken, JP;
Masatoshi Yoshikawa, Kanagawa-ken, JP;
Susumu Hashimoto, Kanagawa-ken, JP;
Masashi Sahashi, Kanagawa-ken, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A magnetoresistance effect element includes a nonmagnetic spacer layer, first and second ferromagnetic layer separated by the nonmagnetic spacer layer, and a nonmagnetic conductivity layer. The first ferromagnetic layer has a magnetization direction at an angle relative to a magnetization direction of the second ferromagnetic layer at zero applied magnetic field. The second ferromagnetic layer has first and second ferromagnetic films antiferromagnetically coupled to one another and an antiferromagnetically coupling film located between and in contact with the first and second ferromagnetic films. The magnetization of the first ferromagnetic layer freely rotates in a magnetic field signal. The nonmagnetic conductivity layer is disposed in contact with the first ferromagnetic layer so that the first ferromagnetic layer is disposed between the nonmagnetic high-conductivity layer and the nonmagnetic spacer layer. The first ferromagnetic layer has a film thickness between 0.5 nanometers and 4.5 nanometers.