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. 30, 2017
Filed:
Sep. 23, 2015
Western Digital (Fremont), Llc, Fremont, CA (US);
Gerardo A. Bertero, Redwood City, CA (US);
Shaoping Li, San Ramon, CA (US);
Qunwen Leng, Palo Alto, CA (US);
Yuankai Zheng, Fremont, CA (US);
Rongfu Xiao, Dublin, CA (US);
Ming Mao, Dublin, CA (US);
Shihai He, Fremont, CA (US);
Miaoyin Wang, Fremont, CA (US);
WESTERN DIGITAL (FREMONT), LLC, Fremont, CA (US);
Abstract
A magnetic read apparatus includes a read sensor, a shield structure and a side magnetic bias structure. The read sensor includes a free layer having a side and a nonmagnetic spacer layer. The shield structure includes a shield pinning structure and a shield reference structure. The nonmagnetic spacer layer is between the shield reference structure and the free layer. The shield reference structure is between the shield pinning structure and the nonmagnetic spacer layer. The shield pinning structure includes a pinned magnetic moment in a first direction. The shield reference structure includes a shield reference structure magnetic moment weakly coupled with the pinned magnetic moment. The side magnetic bias structure is adjacent to the side of the free layer.