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:
Dec. 02, 2025
Filed:
Jul. 11, 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);
Rohan Babu Nagabhirava, Virginia Beach, VA (US);
Kuok San Ho, Emerald Hills, CA (US);
Hisashi Takano, Fujisawa, JP;
Son T. Le, San Jose, CA (US);
Nam Hai Pham, Tokyo, JP;
Huy H. Ho, Tokyo, JP;
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
The present disclosure generally relates to temperature detection devices including a ferromagnetic (FM) material disposed at a media facing surface (MFS). The FM material is configured to produce a first electric voltage signal in response to a temperature gradient due to an anomalous Nernst effect. The temperature detection device may also include a spin-orbit torque (SOT) material abutting the FM material. The SOT material includes at least one of BiSb, a topological insulator, a topological half-Heusler alloy, or a weakly oxidized heavy metal. The SOT material is recessed from the MFS, wherein the SOT material is configured to receive a spin current parallel to the temperature gradient generated by a spin Seebeck effect in the FM material. The spin current is detectable as a second electric voltage signal via an inverse spin Hall effect. The first electric voltage signal is added to the second electric voltage signal.