Patterson & Sheridan, LLP
Spin-orbit torque based magnetic recording
The present disclosure generally relates to data storage devices, and more specifically, to a magnetic media drive employing a magnetic recording head. The head includes a main pole, a spin Hall structure surrounding at least a portion of the main pole at a location that is recessed from a media facing surface (MFS), and a spin-torque structure surrounding at least a portion of the main pole at the MFS. Spin-orbit torque (SOT) is generated from the spin Hall structure. The spin-torque structure magnetization switching (or precession) is induced by the SOT. The SOT based head with the spin-torque structure increases both track density (tracks per inch) and linear density (bit per inch). The areal density capability (ADC), which is the product of tracks per inch and bit per inch, can be further improved by removing the side shield and the leading shield, when the spin-torque structure is utilized in the SOT based head.
WESTERN DIGITAL TECHNOLOGIES, INC.
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inventional inventional inventional
Suping Michael Kuok San Zhanjie
Song Ho Li