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:
May. 10, 2016
Filed:
Oct. 08, 2013
Applicant:
Headway Technologies, Inc., Milpitas, CA (US);
Inventors:
Tai Min, San Jose, CA (US);
Yuhui Tang, Milpitas, CA (US);
Lijie Guan, Cupertino, CA (US);
Min Li, Fremont, CA (US);
Assignee:
Headway Technologies, Inc., Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/23 (2006.01); G11B 5/127 (2006.01); G11B 5/235 (2006.01); G11B 5/31 (2006.01); H01F 10/32 (2006.01);
U.S. Cl.
CPC ...
G11B 5/232 (2013.01); G11B 5/1278 (2013.01); G11B 5/235 (2013.01); G11B 5/3116 (2013.01); H01F 10/3272 (2013.01); Y10T 428/1186 (2015.01);
Abstract
A perpendicular magnetic recording (PMR) head is fabricated with main pole and a trailing edge shield antiferromagnetically coupled across a write gap by either having the write gap layer formed as a synthetic antiferromagnetic tri-layer (SAF) or formed as a monolithic layer of antiferromagnetic material. The coupling improves the write performance of the writer by enhancing the perpendicular component of the write field and its gradient. Methods of fabricating the writer are provided.