US 11,657,835 B2
Magnetic head with assisted magnetic recording comprising an electrically conductive, non-magnetic material
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); and Jian-Gang Zhu, San Jose, CA (US)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Apr. 14, 2022, as Appl. No. 17/721,137.
Application 17/721,137 is a continuation of application No. 17/141,068, filed on Jan. 4, 2021, granted, now 11,373,675.
Application 17/141,068 is a continuation of application No. 16/252,419, filed on Jan. 18, 2019, granted, now 10,891,975, issued on Jan. 12, 2021.
Claims priority of provisional application 62/743,110, filed on Oct. 9, 2018.
Prior Publication US 2022/0238135 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G11B 5/115 (2006.01); G11B 5/31 (2006.01); G11B 5/127 (2006.01); G11B 5/187 (2006.01)
CPC G11B 5/115 (2013.01) [G11B 5/1278 (2013.01); G11B 5/187 (2013.01); G11B 5/3116 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic head, comprising:
a main pole having a surface at an air bearing surface (ABS);
a trailing shield, wherein the trailing shield has a surface at the ABS; and
an electrically conductive, non-magnetic material portion disposed between the main pole and the trailing shield, wherein the electrically conductive, non-magnetic material portion has a first surface at the ABS, and wherein the electrically conductive, non-magnetic material portion shorts the main pole and the trailing shield when an electrical current is applied to the magnetic head.