US 11,881,237 B1
Cross track current design for energy assisted magnetic recording
Muhammad Asif Bashir, San Jose, CA (US); Edward Hin Pong Lee, San Jose, CA (US); Amanda Baer, Campbell, CA (US); Aron Pentek, San Jose, CA (US); Zhigang Bai, Fremont, CA (US); Yunfei Ding, Fremont, CA (US); James Terrence Olson, San Jose, CA (US); Alexander Goncharov, Morgan Hill, CA (US); and Petrus Antonius Van Der Heijden, Cupertino, CA (US)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US)
Filed by Western Digital Technologies, Inc., San Jose, CA (US)
Filed on Nov. 24, 2021, as Appl. No. 17/456,440.
Int. Cl. G11B 5/11 (2006.01); G11B 5/127 (2006.01); G11B 5/235 (2006.01); G11B 5/31 (2006.01); G11B 5/21 (2006.01); G11B 5/00 (2006.01)
CPC G11B 5/315 (2013.01) [G11B 5/11 (2013.01); G11B 5/1278 (2013.01); G11B 5/235 (2013.01); G11B 5/314 (2013.01); G11B 5/3116 (2013.01); G11B 5/3133 (2013.01); G11B 5/3146 (2013.01); G11B 5/21 (2013.01); G11B 2005/0024 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A magnetic recording head, comprising:
a main pole;
a trailing gap disposed over a first surface of the main pole;
a hot seed layer disposed over the trailing gap, the trailing gap being disposed between the first surface of the main pole and the hot seed layer at a media facing surface, wherein the hot seed layer has a first length in a cross-track direction at the media facing surface;
a first side shield disposed adjacent to a second surface of the main pole;
a second side shield disposed adjacent to a third surface of the main pole;
a first insulation layer disposed over the hot seed layer, wherein the first insulation layer has a second length greater than or equal to the first length of the hot seed layer in the cross-track direction at the media facing surface;
a trailing shield disposed over the first insulation layer;
a second insulation layer disposed adjacent to the first side shield and the second side shield; and
a leading shield disposed adjacent to the second insulation layer.