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:
Aug. 23, 2022
Filed:
Aug. 03, 2021
Seagate Technology Llc, Fremont, CA (US);
Victor Sapozhnikov, Minnetonka, MN (US);
Taras Grigorievich Pokhil, Arden Hills, MN (US);
Andrzej Adam Stankiewicz, Edina, MN (US);
Mohammed Shariat Ullah Patwari, Edina, MN (US);
Seagate Technology LLC, Fremont, CA (US);
Abstract
A reader includes a bearing surface and a free layer having a front surface that forms a portion of the bearing surface. The reader also includes a synthetic antiferromagnetic (SAF) structure below the free layer, the SAF structure has a narrow portion with a front surface that forms a portion of the bearing surface and a wide portion behind the narrow portion. The reader further includes an antiferromagnetic (AFM) layer in contact with the wide portion of the SAF structure. The SAF structure is configured to prevent switching from one magnetic state to another magnetic state in the wide portion under thermal fluctuations.