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:
Mar. 28, 2023
Filed:
Mar. 17, 2022
Western Digital Technologies, Inc., San Jose, CA (US);
Zhigang Bai, Fremont, CA (US);
Youfeng Zheng, San Jose, CA (US);
Venkatesh Chembrolu, Fremont, CA (US);
Supradeep Narayana, Santa Clara, CA (US);
Yaguang Wei, Pleasanton, CA (US);
Suping Song, Fremont, CA (US);
Terence T. Lam, Cupertino, CA (US);
Kuok San Ho, Emerald Hills, CA (US);
Changqing Shi, San Ramon, CA (US);
Lijie Guan, San Jose, CA (US);
Jian-Gang Zhu, San Jose, CA (US);
Western Digital Technologies, Inc., San Jose, CA (US);
Abstract
A magnetic head includes a main pole configured to serve as a first electrode, an upper pole containing a trailing magnetic shield configured to a serve as a second electrode, and an electrically conductive portion located in a trailing gap between the main pole and the trailing magnetic shield. The electrically conductive portion is not part of a spin torque oscillator stack, and the electrically conductive portion includes first and second electrically conductive, non-magnetic material layers. The spin torque oscillator stack is coupled to the first electrically conductive, non-magnetic material layer. The main pole and the trailing magnetic shield are electrically shorted by the electrically conductive portion across the trailing gap between the main pole and the trailing magnetic shield such that an electrically conductive path is present between the main pole and the trailing magnetic shield through the electrically conductive portion.