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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.:

US 10871528 B1

PDFFull Text
Date of Patent:
Dec. 22, 2020

Filed:

Oct. 27, 2017

Magnetoresistive effect element and magnetic memory

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Yohei Shiokawa, Tokyo, JP;

Minoru Ota, Tokyo, JP;

Tomoyuki Sasaki, Tokyo, JP;

Yoshitomo Tanaka, Tokyo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Feifei Yeung Lopez

Int. Cl.
CPC ...
G01R 33/09 (2006.01); H01L 43/10 (2006.01); H01L 43/02 (2006.01); H01L 27/22 (2006.01); H01L 43/08 (2006.01); G11C 11/16 (2006.01); H01L 21/8239 (2006.01); H01L 43/06 (2006.01); H01L 43/04 (2006.01); H01L 41/20 (2006.01); H01L 45/00 (2006.01); G11C 13/00 (2006.01); H01F 10/32 (2006.01); H01L 43/12 (2006.01);
U.S. Cl.
CPC ...
G01R 33/093 (2013.01); G01R 33/098 (2013.01); G11C 11/161 (2013.01); G11C 13/0002 (2013.01); H01F 10/329 (2013.01); H01F 10/3286 (2013.01); H01L 21/8239 (2013.01); H01L 27/222 (2013.01); H01L 27/226 (2013.01); H01L 41/20 (2013.01); H01L 43/02 (2013.01); H01L 43/04 (2013.01); H01L 43/06 (2013.01); H01L 43/065 (2013.01); H01L 43/08 (2013.01); H01L 43/10 (2013.01); H01L 43/12 (2013.01); H01L 45/1233 (2013.01); H01L 27/228 (2013.01);
Abstract

A magnetoresistive effect element includes a magnetization fixed layer, a magnetization free layer, and a non-magnetic spacer layer that is stacked between the magnetization fixed layer and the magnetization free layer. The magnetization fixed layer includes a first fixed layer and a second fixed layer that are formed of a ferromagnetic material, and a magnetic coupling layer that is stacked between the first fixed layer and the second fixed layer. The first fixed layer and the second fixed layer are magnetically coupled to each other by exchange coupling via the magnetic coupling layer such that magnetization directions of the first fixed layer and the second fixed layer are antiparallel to each other. The magnetic coupling layer is a non-magnetic layer that includes Ir and at least one of the following elements: Cr, Mn, Fe, Co and Ni.

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