US 11,854,584 B1
Current assisted HAMR magnetic writer
Muhammad Asif Bashir, San Jose, CA (US); Alexander Goncharov, Morgan Hill, CA (US); Takuya Matsumoto, San Jose, 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 Jul. 29, 2022, as Appl. No. 17/876,900.
Claims priority of provisional application 63/227,280, filed on Jul. 29, 2021.
Int. Cl. G11B 5/00 (2006.01); G11B 5/31 (2006.01); G11B 5/60 (2006.01)
CPC G11B 5/6088 (2013.01) [G11B 2005/0021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A heat-assisted magnetic recording (HAMR) write head, comprising:
a waveguide;
a trailing shield;
a main pole between the waveguide and the trailing shield, the main pole having a main pole tip;
a coil around the main pole;
an electrical connection between the main pole tip and the trailing shield;
a first terminal coupled to the main pole;
a second terminal coupled to the trailing shield; and
a current path formed between the first terminal and the second terminal through the trailing shield, the electrical connection, and the main pole.