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:
Jun. 20, 2023

Filed:

Mar. 23, 2021
Applicant:

Western Digital Technologies, Inc., San Jose, CA (US);

Inventors:

Susumu Okamura, Fujisawa, JP;

Christian Kaiser, San Jose, CA (US);

James Mac Freitag, Sunnyvale, CA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H10N 50/80 (2023.01); G11B 5/21 (2006.01); H10B 61/00 (2023.01); H10N 50/85 (2023.01); H01F 10/32 (2006.01); H10N 50/10 (2023.01); G01R 33/09 (2006.01); G11C 11/16 (2006.01);
U.S. Cl.
CPC ...
H10N 50/80 (2023.02); G01R 33/093 (2013.01); G11B 5/21 (2013.01); G11C 11/161 (2013.01); H01F 10/325 (2013.01); H01F 10/3295 (2013.01); H10B 61/00 (2023.02); H10N 50/10 (2023.02); H10N 50/85 (2023.02);
Abstract

Aspects of the present disclosure generally relate to a spintronic device for use in a magnetic media drive, a magnetoresistive random access memory device, a magnetic sensor, or a magnetic recording write head. The spintronic device comprises a multilayer structure having a negative anisotropic field and a negative spin polarization. The multilayer structure comprises a plurality of layers, each layer of the plurality of layers comprising a first sublayer comprising Fe and a second sublayer comprising Co. At least one of the first sublayer and the second sublayer comprises one or more of Cr, V, and Ti. The first and second sublayers are alternating. The negative anisotropic field of the multilayer structure is between about −0.5 T to about −0.8 T, and an effective magnetization of the multilayer structure is between about 2.4 T to about 2.8 T.


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