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:
Dec. 16, 2008
Filed:
Oct. 25, 2005
Masashige Sato, Kawasaki, JP;
Shinjiro Umehara, Kawasaki, JP;
Hiroshi Ashida, Kawasaki, JP;
Kazuo Kobayashi, Kawasaki, JP;
Masashige Sato, Kawasaki, JP;
Shinjiro Umehara, Kawasaki, JP;
Hiroshi Ashida, Kawasaki, JP;
Kazuo Kobayashi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A ferromagnetic tunnel junction is disclosed. The ferromagnetic tunnel junction includes a pinned magnetic layer, a tunnel insulating film formed on the pinned magnetic layer, and a free magnetic multilayer body formed on the tunnel insulating film. The free magnetic multilayer body includes a first free magnetic layer, a diffusion barrier layer, and a second free magnetic layer stacked in this order on the tunnel insulating film. The first free magnetic layer and the second free magnetic layer are ferromagnetically coupled with each other. The diffusion barrier layer inhibits the additive element contained in the first free magnetic layer from diffusing into the second free magnetic layer.