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.

Date of Patent:
Nov. 29, 2022

Filed:

Nov. 12, 2020
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Karthik Yogendra, Albany, NY (US);

Eric Raymond Evarts, Niskayuna, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/00 (2006.01); G11C 11/16 (2006.01); H01L 43/12 (2006.01); H01L 27/22 (2006.01); G11C 11/56 (2006.01); H01F 10/32 (2006.01); H01L 43/10 (2006.01);
U.S. Cl.
CPC ...
G11C 11/161 (2013.01); G11C 11/1673 (2013.01); G11C 11/1675 (2013.01); G11C 11/5607 (2013.01); H01F 10/329 (2013.01); H01L 27/228 (2013.01); H01L 43/12 (2013.01); H01L 43/10 (2013.01);
Abstract

Provided is a magnetoresistive random-access memory (MRAM) cell. The MRAM cell comprises a first heavy metal layer and a first magnetic tunnel junctions (MTJ) coupled to the first heavy metal layer. The first MTJ has a first area. The MRAM cell further comprises a second MTJ. The second MTJ is connected in series with the first MTJ, and the second MTJ has a second area that is different than the first area. The second MTJ shared a reference layer with the first MTJ. The MRAM cell further comprises a second heavy metal layer that is coupled to the second MTJ.


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