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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 12557559 B1

PDFFull Text
Date of Patent:
Feb. 17, 2026

Filed:

Jul. 27, 2022

Iron-cobalt based target

Applicants:

Solar Applied Materials Technology Corp., Tainan, TW;

National Tsing Hua University, Hsinchu, TW;

Inventors:

Chih-Wen Tang, Tainan, TW;

Chih-Huang Lai, Tainan, TW;

Wei-Chih Huang, Tainan, TW;

Chun-Liang Yang, Tainan, TW;

Kuan-Ling Ou, Tainan, TW;

Assignees:

SOLAR APPLIED MATERIALS TECHNOLOGY CORP., Tainan, TW;

NATIONAL TSING HUA UNIVERSITY, Hsinchu, TW;

Attorney:

WPAT, PC

Primary Examiner:

Sitaramarao S Yechuri

Int. Cl.
CPC ...
H10N 50/85 (2023.01); H01F 10/32 (2006.01); H10B 61/00 (2023.01); H10N 50/80 (2023.01); C22C 38/10 (2006.01);
U.S. Cl.
CPC ...
H10N 50/85 (2023.02); H01F 10/3254 (2013.01); H01F 10/3268 (2013.01); H10B 61/00 (2023.02); H10N 50/80 (2023.02); C22C 38/10 (2013.01); H01F 10/3286 (2013.01);
Abstract

Provided is a ferromagnetic free layer, comprising Fe, Co, B and an additive metal, and based on a total atomic number of the ferromagnetic free layer, a content of Co is more than 0 at % and less than 30 at %, a content of B is more than 10 at % and less than or equal to 35 at %, and a content of the additive metal is more than or equal to 2 at % and less than 10 at %; the additive metal comprises Mo, Re or a combination thereof, and a thickness of the ferromagnetic free layer is more than or equal to 1.5 nm and less than 2.5 nm. The ferromagnetic free layer can be applied to a MTJ structure as a single layer, and has sufficient thermal stability for maintaining good magnetic properties after thermal treatment, which makes sure that the MTJ structure can exert normal recording function.

Find Patent Forward Citations

Tang, Chih-Wen. (2026). Iron-cobalt based target (U.S. Patent No. 12557559). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12557559

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