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. 23, 2021
Filed:
Jun. 24, 2020
Western Digital Technologies, Inc., San Jose, CA (US);
Zhigang Bai, Fremont, CA (US);
Alexander Taratorin, Palo Alto, CA (US);
Anna Zheng, San Jose, CA (US);
Venkatesh Chembrolu, Fremont, CA (US);
Supradeep Narayana, Santa Clara, CA (US);
Suping Song, Fremont, CA (US);
Yaguang Wei, Pleasanton, CA (US);
Terence Lam, Cupertino, CA (US);
Michael Kuok San Ho, Emerald Hills, CA (US);
Changqing Shi, San Ramon, CA (US);
Lijie Guan, San Jose, CA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
A magnetic recording write head has an electrically-conductive structure in the write gap between the write pole and the trailing shield and electrical circuitry for directing current through the write gap. The current through the electrically-conductive structure generates a circular Ampere field which, at the disk-facing end of the write pole, is substantially parallel to the disk-facing end of the write pole. The electrically-conductive structure in the write gap may be a STO or an electrically-conductive layer that is not part of a STO. The current direction through the electrically-conductive structure in the write gap is selected so that the generated Ampere field at the write pole end is in substantially the same direction as the magnetization direction of the write head side shields, which has been discovered to result in minimization of cross-track interference.