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. 19, 2025
Filed:
Sep. 13, 2023
Western Digital Technologies, Inc., San Jose, CA (US);
Tokyo Institute of Technology, Tokyo, JP;
Quang Le, San Jose, CA (US);
Xiaoyong Liu, San Jose, CA (US);
Brian R. York, San Jose, CA (US);
Cherngye Hwang, San Jose, CA (US);
Son T. Le, San Jose, CA (US);
Hisashi Takano, Fujisawa, JP;
Fan Tuo, Fujisawa, JP;
Hassan Osman, San Jose, CA (US);
Nam Hai Pham, Tokyo, JP;
Western Digital Technologies, Inc., San Jose, CA (US);
Tokyo Institute of Technology, Tokyo, JP;
Abstract
The present disclosure generally relates to a magnetic recording head comprising a read head. The read head comprises a sensor disposed at a media facing surface (MFS) and a spin generator spaced from the sensor and recessed from the MFS. The sensor and spin generators are disposed on a non-magnetic layer. The sensor comprises a free layer and the spin generator comprises at least one spin orbit torque (SOT) layer. The SOT layer may comprise topological material such as BiSb. The sensor is configured to detect a read signal using a first voltage lead and a second voltage lead. The spin generator is configured to inject spin current through the non-magnetic layer to the sensor using a first current lead and a second current lead. The shape of the non-magnetic layer is a triangular or trapezoidal shape to further concentrate spin current.