Patent · US Active

Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layer

US10867626B1 · kind B1 · utility

20Cited by

16References

21Claims

0Family size

Assignee

Western Digital Technologies, Inc. · US

Inventors

Zhanjie Li · Pleasanton, US
Suping Song · Fremont, US
Lijie Guan · San Jose, US

Key dates

Filing date	Jun 26, 2019
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Jun 26, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG11B2005/0024
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic recording head includes a trailing shield and a main pole. A trailing shield gap is between the trailing shield and the main pole. A spin orbital torque structure is within the trailing shield gap. The spin orbital torque structure includes a spin torque layer having a first side and a second side at a media facing surface. A first spin Hall layer is along the first side of the spin torque layer. A second spin Hall layer is along the second side of the spin torque layer. The first spin Hall layer comprises a heavy metal material having a positive spin Hall angle. The second spin Hall layer comprises a heavy metal material having a negative spin Hall angle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.