US 12,315,538 B2
Magnetic recording head with assisting electric current in trailing shield
Alexander Goncharov, Morgan Hill, CA (US); Muhammad Asif Bashir, San Jose, CA (US); Petrus Antonius Van Der Heijden, Cupertino, CA (US); Yunfei Ding, Fremont, CA (US); Zhigang Bai, Fremont, CA (US); and James Terrence Olson, 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 Jan. 9, 2024, as Appl. No. 18/408,014.
Application 18/408,014 is a division of application No. 17/845,777, filed on Jun. 21, 2022, granted, now 11,900,971.
Prior Publication US 2024/0144964 A1, May 2, 2024
Int. Cl. G11B 5/31 (2006.01); G11B 5/23 (2006.01)
CPC G11B 5/3116 (2013.01) [G11B 5/23 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A magnetic recording head, comprising:
a main pole;
a first side shield disposed adjacent to a first surface of the main pole;
a second side shield disposed adjacent to a second surface of the main pole opposite the first surface;
a trailing shield disposed over the first side shield, the second side shield, and a third surface of the main pole;
a leading shield disposed adjacent to a fourth surface of the main pole opposite the third surface, the leading shield comprising:
a first portion disposed adjacent to the first side shield;
a second portion disposed adjacent to the second side shield; and
a third portion disposed between the first portion and the second portion, and disposed adjacent to the fourth surface of the main pole;
a first insulation layer disposed adjacent to the third surface of the main pole; and
a second insulation layer comprising:
a first portion disposed over the first portion of the leading shield;
a second portion disposed between the first and second portions of the leading shield when viewed from a media facing surface; and
a third portion disposed over the second portion of the leading shield.