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:
May. 26, 2015
Filed:
Jan. 25, 2011
Shoji Ikeda, Sendai, JP;
Hideo Ohno, Sendai, JP;
Hiroyuki Yamamoto, Shiki, JP;
Kenchi Ito, Kunitachi, JP;
Hiromasa Takahashi, Hachioji, JP;
Shoji Ikeda, Sendai, JP;
Hideo Ohno, Sendai, JP;
Hiroyuki Yamamoto, Shiki, JP;
Kenchi Ito, Kunitachi, JP;
Hiromasa Takahashi, Hachioji, JP;
Hitachi, Ltd., Tokyo, JP;
Tohoku University, Sendai-shi, Miyagi, JP;
Abstract
A magnetoresistive effect element uses a perpendicularly magnetized material and has a high TMR ratio. Intermediate layers composed of an element metal having a melting point of 1600° C. or an alloy containing the metal on an outside of a structure consisting of a CoFeB layer, an MgO barrier layer, and a CoFeB layer. By inserting the intermediate layers, crystallization of the CoFeB layer during annealing is advanced from an MgO (001) crystal side, so that the CoFeB layer has a crystalline orientation in bcc (001).