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:
Sep. 01, 2015
Filed:
Dec. 22, 2010
Dehua Han, Fremont, CA (US);
Ming Sun, Pleasanton, CA (US);
Feng Liu, San Ramon, CA (US);
Jinqiu Zhang, Fremont, CA (US);
Shaoping LI, San Ramon, CA (US);
Lieping Zhong, San Jose, CA (US);
Xiaoqi Liu, Milpitas, CA (US);
Tao Pan, San Jose, CA (US);
Dehua Han, Fremont, CA (US);
Ming Sun, Pleasanton, CA (US);
Feng Liu, San Ramon, CA (US);
Jinqiu Zhang, Fremont, CA (US);
Shaoping Li, San Ramon, CA (US);
Lieping Zhong, San Jose, CA (US);
Xiaoqi Liu, Milpitas, CA (US);
Tao Pan, San Jose, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A magnetic recording transducer for use in a data storage device is described. The transducer has a main writer pole and magnetic shields adjacent to the main writer pole. The magnetic shields include a first plated soft ferromagnetic layer, a second plated soft ferromagnetic layer, and an antiferromagnetic coupling (AFC) trilayer between the first plated soft ferromagnetic layer and the second plated soft ferromagnetic layer. The AFC trilayer includes a first AFC layer of sputtered ferromagnetic material; a second AFC layer of a nonmagnetic antiferromagnetic exchange material, and a third AFC layer of sputtered ferromagnetic material. Shields with AFC trilayers in leading, side, and/or trailing shields, as well as between shields are provided. A method of fabricating is also provided.