Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars

Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars

Abstract 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...

Full description

Bibliographic Details
Main Authors: Sihua Li, Sarjoosing Goolaup, Jaesuk Kwon, Feilong Luo, Weiliang Gan, Wen Siang Lew
Format: Article
Language:English
Published: Nature Publishing Group 2017-04-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-017-01079-7
id doaj-23a8ed83ad7846e491fe21ce20591903
record_format Article
spelling doaj-23a8ed83ad7846e491fe21ce205919032020-12-08T03:03:33ZengNature Publishing GroupScientific Reports2045-23222017-04-01711910.1038/s41598-017-01079-7Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall BarsSihua Li0Sarjoosing Goolaup1Jaesuk Kwon2Feilong Luo3Weiliang Gan4Wen Siang Lew5School of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversitySchool of Physical and Mathematical Sciences, Nanyang Technological UniversityAbstract 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.https://doi.org/10.1038/s41598-017-01079-7
collection DOAJ
language English
format Article
sources DOAJ
author Sihua Li
Sarjoosing Goolaup
Jaesuk Kwon
Feilong Luo
Weiliang Gan
Wen Siang Lew
spellingShingle Sihua Li
Sarjoosing Goolaup
Jaesuk Kwon
Feilong Luo
Weiliang Gan
Wen Siang Lew
Deterministic Spin-Orbit Torque Induced Magnetization Reversal In Pt/[Co/Ni] n /Co/Ta Multilayer Hall Bars
Scientific Reports
author_facet Sihua Li
Sarjoosing Goolaup
Jaesuk Kwon
Feilong Luo
Weiliang Gan
Wen Siang Lew
author_sort Sihua Li
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
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2017-04-01
description Abstract 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.
url https://doi.org/10.1038/s41598-017-01079-7
work_keys_str_mv AT sihuali deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
AT sarjoosinggoolaup deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
AT jaesukkwon deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
AT feilongluo deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
AT weilianggan deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
AT wensianglew deterministicspinorbittorqueinducedmagnetizationreversalinptconincotamultilayerhallbars
_version_ 1724392914805587968

Similar Items