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P. Li, T. Liu, H. Chang, A. Kalitsov, W. Zhang, et al. Spin Orbit Torque-Assisted Switching in Magnetic Insulator Thin Films with Strong Perpendicular Magnetic Anisotropy
Release time:2022-07-11
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- Journal:
- nature communications
- Abstract:
- As an in-plane charge current flows in a heavy metal film with spin–orbit coupling, it produces a torque on and thereby switches the magnetization in a neighbouring ferromagnetic metal film. Such spin–orbit torque (SOT)-induced switching has been studied extensively in recent years and has shown higher efficiency than switching using conventional spin-transfer torque. Here we report the SOT-assisted switching in heavy metal/magnetic insulator systems. The experiments used a Pt/BaFe12O19 bilayer where the BaFe12O19 layer exhibits perpendicular magnetic anisotropy. As a charge current is passed through the Pt film, it produces a SOT that can control the up and down states of the remnant magnetization in the BaFe12O19 film when the film is magnetized by an in-plane magnetic field. It can reduce or increase the switching field of the BaFe12O19 film by as much as about 500 Oe when the film is switched with an out-of-plane field.
- Document Code:
- 12688
- Volume:
- 7
- Translation or Not:
- no
- Date of Publication:
- 2016-09-11
- Pre One:Y. Zhang, X. Yang, P. Li*, J. Ouyang, M. Wu. Effects of Growth Order on Perpendicular Magnetic Anisotropy of Heavy-Metal/Ferromagnet/MgO Trilayered Structures
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