Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars
Spin-orbit torque (SOT) induced by electric current has attracted extensive attention as an efficient method of controlling the magnetization in nanomagnetic structures. SOT-induced magnetization reversal is usually achieved with the aid of an in-plane bias magnetic field. In this paper, we show tha...
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sg-ntu-dr.10356-836342023-02-28T19:23:23Z Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars Li, Sihua Goolaup, Sarjoosing Kwon, Jaesuk Luo, Feilong Gan, Weiliang Lew, Wen Siang School of Physical and Mathematical Sciences Spintronics Electrical and electronic engineering Spin-orbit torque (SOT) induced by electric current has attracted extensive attention as an efficient method of controlling the magnetization in nanomagnetic structures. SOT-induced magnetization reversal is usually achieved with the aid of an in-plane bias magnetic field. In this paper, we show that by selecting a film stack with weak out-of-plane magnetic anisotropy, field-free SOT-induced switching can be achieved in micron sized multilayers. Using direct current, deterministic bipolar magnetization reversal is obtained in Pt/[Co/Ni]2/Co/Ta structures. Kerr imaging reveals that the SOT-induced magnetization switching process is completed via the nucleation of reverse domain and propagation of domain wall in the system. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Published version 2017-06-19T09:40:34Z 2019-12-06T15:27:10Z 2017-06-19T09:40:34Z 2019-12-06T15:27:10Z 2017 Journal Article Li, S., Goolaup, S., Kwon, J., Luo, F., Gan, W., & Lew, W. S. (2017). Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars. Scientific Reports, 7, 972-. https://hdl.handle.net/10356/83634 http://hdl.handle.net/10220/42730 10.1038/s41598-017-01079-7 en Scientific Reports © 2017 The Author(s) (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. 9 p. application/pdf |
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Spintronics Electrical and electronic engineering Li, Sihua Goolaup, Sarjoosing Kwon, Jaesuk Luo, Feilong Gan, Weiliang Lew, Wen Siang Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars |
| description |
Spin-orbit torque (SOT) induced by electric current has attracted extensive attention as an efficient method of controlling the magnetization in nanomagnetic structures. SOT-induced magnetization reversal is usually achieved with the aid of an in-plane bias magnetic field. In this paper, we show that by selecting a film stack with weak out-of-plane magnetic anisotropy, field-free SOT-induced switching can be achieved in micron sized multilayers. Using direct current, deterministic bipolar magnetization reversal is obtained in Pt/[Co/Ni]2/Co/Ta structures. Kerr imaging reveals that the SOT-induced magnetization switching process is completed via the nucleation of reverse domain and propagation of domain wall in the system. |
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School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Li, Sihua Goolaup, Sarjoosing Kwon, Jaesuk Luo, Feilong Gan, Weiliang Lew, Wen Siang |
| format |
Article |
| author |
Li, Sihua Goolaup, Sarjoosing Kwon, Jaesuk Luo, Feilong Gan, Weiliang Lew, Wen Siang |
| author_sort |
Li, Sihua |
| title |
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]
n
/Co/Ta Multilayer Hall Bars |
| title_short |
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]
n
/Co/Ta Multilayer Hall Bars |
| title_full |
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]
n
/Co/Ta Multilayer Hall Bars |
| title_fullStr |
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]
n
/Co/Ta Multilayer Hall Bars |
| title_full_unstemmed |
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni]
n
/Co/Ta Multilayer Hall Bars |
| title_sort |
deterministic spin-orbit torque induced magnetization reversal in pt/[co/ni]
n
/co/ta multilayer hall bars |
| publishDate |
2017 |
| url |
https://hdl.handle.net/10356/83634 http://hdl.handle.net/10220/42730 |
| _version_ |
1759854127180939264 |