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:
Nov. 11, 2014
Filed:
Sep. 14, 2012
Masaru Toko, Yokohama, JP;
Masahiko Nakayama, Shimonoseki, JP;
Akihiro Nitayama, Yokohama, JP;
Tatsuya Kishi, Yokohama, JP;
Hisanori Aikawa, Yokohama, JP;
Hiroaki Yoda, Kawasaki, JP;
Masaru Toko, Yokohama, JP;
Masahiko Nakayama, Shimonoseki, JP;
Akihiro Nitayama, Yokohama, JP;
Tatsuya Kishi, Yokohama, JP;
Hisanori Aikawa, Yokohama, JP;
Hiroaki Yoda, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a magnetoresistive element comprises a first magnetic layer having a magnetization direction invariable and perpendicular to a film surface, a tunnel barrier layer formed on the first magnetic layer, and a second magnetic layer formed on the tunnel barrier layer and having a magnetization direction variable and perpendicular to the film surface. The first magnetic layer includes an interface layer formed on an upper side in contact with a lower portion of the tunnel barrier layer, and a main body layer formed on a lower side and serving as an origin of perpendicular magnetic anisotropy. The interface layer includes a first area provided on an inner side and having magnetization, and a second area provided on an outer side to surround the first area and having magnetization smaller than the magnetization of the first area or no magnetization.