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:
Nov. 05, 2024
Filed:
Jul. 26, 2023
Western Digital Technologies, Inc., San Jose, CA (US);
Quang Le, San Jose, CA (US);
Rohan Babu Nagabhirava, Virginia Beach, VA (US);
Xiaoyong Liu, San Jose, CA (US);
Brian R. York, San Jose, CA (US);
Son T. Le, San Jose, CA (US);
Cherngye Hwang, San Jose, CA (US);
Kuok San Ho, Emerald Hills, CA (US);
Hisashi Takano, Fujisawa, JP;
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
The present disclosure generally relates to a two dimensional magnetic recording (TDMR) spin-orbit torque (SOT) read head comprising bismuth antimony (BiSb) layers. The read head comprises a lower reader comprising a first SOT stack and an upper reader comprising a second SOT stack. The first SOT stack and the second SOT stack each individually comprise a BiSb layer recessed from a media facing surface (MFS) and a free layer exposed at the MFS. The BiSb layers of each SOT stack are recessed from the MFS a distance of about 5 nm to about 20 nm, the distance being less than a length of the free layers. In one embodiment, the lower reader and the upper reader share a current path. In another embodiment, the lower reader and the upper reader have separate current paths.