US 12,354,627 B2
Higher areal density non-local spin orbit torque (SOT) writer with topological insulator materials
Quang Le, San Jose, CA (US); Xiaoyong Liu, San Jose, CA (US); Cherngye Hwang, San Jose, CA (US); Brian R. York, San Jose, CA (US); Son T. Le, San Jose, CA (US); Sharon Swee Ling Banh, San Jose, CA (US); Maki Maeda, Fujisawa (JP); Fan Tuo, Fujisawa (JP); Yu Tao, Fujisawa (JP); Hisashi Takano, Fujisawa (JP); and Nam Hai Pham, Tokyo (JP)
Assigned to Western Digital Technologies, Inc., San Jose, CA (US); and Tokyo Institute of Technology, Tokyo (JP)
Filed by Western Digital Technologies, Inc., San Jose, CA (US); and Tokyo Institute of Technology, Tokyo (JP)
Filed on Aug. 3, 2023, as Appl. No. 18/229,785.
Claims priority of provisional application 63/523,750, filed on Jun. 28, 2023.
Prior Publication US 2025/0006221 A1, Jan. 2, 2025
Int. Cl. G11B 5/31 (2006.01); G11B 5/127 (2006.01); G11B 5/235 (2006.01); G11B 5/37 (2006.01); G11B 5/00 (2006.01)
CPC G11B 5/314 (2013.01) [G11B 5/1278 (2013.01); G11B 5/235 (2013.01); G11B 5/37 (2013.01); G11B 2005/0024 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A magnetic recording head, comprising:
a main pole disposed at a media facing surface (MFS);
a shield disposed at the MFS;
a non-magnetic layer disposed between the main pole and the shield, the non-magnetic layer being disposed at the MFS, wherein the non-magnetic layer is tapered in shape; and
a spin orbit torque (SOT) layer disposed over the non-magnetic layer, the SOT layer being recessed a distance of about 20 nm to about 100 nm from the MFS.