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:
Sep. 25, 2012
Filed:
Sep. 18, 2009
Hiromi Fuke, Yokohama, JP;
Susumu Hashimoto, Tokyo, JP;
Masayuki Takagishi, Kunitachi, JP;
Hitoshi Iwasaki, Yokosuka, JP;
Hiromi Fuke, Yokohama, JP;
Susumu Hashimoto, Tokyo, JP;
Masayuki Takagishi, Kunitachi, JP;
Hitoshi Iwasaki, Yokosuka, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A method of manufacturing a magnetoresistive element includes forming a metal layer on a first ferromagnetic layer, oxidizing the metal layer to form an oxide layer in which unoxidized metal is remained and a magnetic conduction column penetrating the oxide layer in a thickness direction and including at least a part of constituent elements of the first ferromagnetic layer, annealing a resultant structure at a higher temperature than a temperature at which the oxide layer is formed to convert at least a part of a periphery of the magnetic conduction column into a magnetic oxide including a part of constituent elements of the oxide layer and at least a part of constituent elements of the magnetic conduction column, and forming a second ferromagnetic layer.