Spin-orbit torque switching of ultralarge-thickness ferrimagnetic GdFeCo

Spin-orbit torque switching of ultralarge-thickness ferrimagnetic GdFeCo We report on spin-orbit torque measurements in ferrimagnetic Gd21(Fe90Co10)79 films with bulk perpendicular magnetic anisotropy and thicknesses up to 30nm. The dampinglike and fieldlike torques have been quantified using second harmonic Hall voltage detection. Both torques show an inverse linear dependence on the thickness that is indicative of the interfacial nature of the torques. The spin-Hall angle remains constant over the thickness range of 10 to 30nm Gd21(Fe90Co10)79. Remarkably, we find that this interfacial torque is able to switch a 30-nm-thick Gd21(Fe90Co10)79 film with a reasonably large thermal stability of ≈100kBT. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Spin-orbit torque switching of ultralarge-thickness ferrimagnetic GdFeCo

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Spin-orbit torque switching of ultralarge-thickness ferrimagnetic GdFeCo

Abstract

We report on spin-orbit torque measurements in ferrimagnetic Gd21(Fe90Co10)79 films with bulk perpendicular magnetic anisotropy and thicknesses up to 30nm. The dampinglike and fieldlike torques have been quantified using second harmonic Hall voltage detection. Both torques show an inverse linear dependence on the thickness that is indicative of the interfacial nature of the torques. The spin-Hall angle remains constant over the thickness range of 10 to 30nm Gd21(Fe90Co10)79. Remarkably, we find that this interfacial torque is able to switch a 30-nm-thick Gd21(Fe90Co10)79 film with a reasonably large thermal stability of ≈100kBT.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.064406
Publisher site
See Article on Publisher Site

Abstract

We report on spin-orbit torque measurements in ferrimagnetic Gd21(Fe90Co10)79 films with bulk perpendicular magnetic anisotropy and thicknesses up to 30nm. The dampinglike and fieldlike torques have been quantified using second harmonic Hall voltage detection. Both torques show an inverse linear dependence on the thickness that is indicative of the interfacial nature of the torques. The spin-Hall angle remains constant over the thickness range of 10 to 30nm Gd21(Fe90Co10)79. Remarkably, we find that this interfacial torque is able to switch a 30-nm-thick Gd21(Fe90Co10)79 film with a reasonably large thermal stability of ≈100kBT.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Aug 4, 2017

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