Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers
Abstract The spin Hall efficiency (ξ) is a crucial parameter that evaluates the charge‐to‐spin conversion capability of a material, and thus materials with higher ξ are highly desirable in spin–orbit torque (SOT) devices. Recent studies have highlighted the use of ferromagnetic materials as robust s...
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Wiley
2025-01-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202407171 |
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| author | Mingzhi Wang Chang Pan Nian Xie Xuepeng Qiu Yufei Li Lili Lang Shiqiang Wang Dashuai Cheng Weijia Fan Shi‐Ming Zhou Zhong Shi |
| author_facet | Mingzhi Wang Chang Pan Nian Xie Xuepeng Qiu Yufei Li Lili Lang Shiqiang Wang Dashuai Cheng Weijia Fan Shi‐Ming Zhou Zhong Shi |
| author_sort | Mingzhi Wang |
| collection | DOAJ |
| description | Abstract The spin Hall efficiency (ξ) is a crucial parameter that evaluates the charge‐to‐spin conversion capability of a material, and thus materials with higher ξ are highly desirable in spin–orbit torque (SOT) devices. Recent studies have highlighted the use of ferromagnetic materials as robust spin sources, paving the way for the development of more efficient SOT devices. To accelerate this innovation, it is essential to pursue ferromagnetic materials of high ξ. Here the experimental observation of a large spin Hall efficiency is reported in ferromagnetic Heusler alloy Co2MnAl (CMA)‐based magnetic trilayers. Utilizing the current‐induced hysteresis loop shift technique, the spin Hall efficiency is determined to be 0.077 for the B2‐phase and 0.029 for the disordered CMA. Notably, magnetization switching both with and without the application of an external auxiliary magnetic field were achieved in these trilayers. The enhancement of ξ is attributed to the formation of chemical ordering in CMA. These findings provide new avenues for the development of ferromagnet‐based SOT devices. |
| format | Article |
| id | doaj-art-22b72d68702a453387f1e8864beef65c |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-22b72d68702a453387f1e8864beef65c2025-01-29T09:50:19ZengWileyAdvanced Science2198-38442025-01-01124n/an/a10.1002/advs.202407171Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic TrilayersMingzhi Wang0Chang Pan1Nian Xie2Xuepeng Qiu3Yufei Li4Lili Lang5Shiqiang Wang6Dashuai Cheng7Weijia Fan8Shi‐Ming Zhou9Zhong Shi10Shanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaState Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 ChinaKey Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaShanghai Key Laboratory of Special Artificial Microstructure Materials and School of Physics Science and Engineering Tongji University Shanghai 200092 ChinaAbstract The spin Hall efficiency (ξ) is a crucial parameter that evaluates the charge‐to‐spin conversion capability of a material, and thus materials with higher ξ are highly desirable in spin–orbit torque (SOT) devices. Recent studies have highlighted the use of ferromagnetic materials as robust spin sources, paving the way for the development of more efficient SOT devices. To accelerate this innovation, it is essential to pursue ferromagnetic materials of high ξ. Here the experimental observation of a large spin Hall efficiency is reported in ferromagnetic Heusler alloy Co2MnAl (CMA)‐based magnetic trilayers. Utilizing the current‐induced hysteresis loop shift technique, the spin Hall efficiency is determined to be 0.077 for the B2‐phase and 0.029 for the disordered CMA. Notably, magnetization switching both with and without the application of an external auxiliary magnetic field were achieved in these trilayers. The enhancement of ξ is attributed to the formation of chemical ordering in CMA. These findings provide new avenues for the development of ferromagnet‐based SOT devices.https://doi.org/10.1002/advs.202407171heusler alloyspin–orbit torquespintronics |
| spellingShingle | Mingzhi Wang Chang Pan Nian Xie Xuepeng Qiu Yufei Li Lili Lang Shiqiang Wang Dashuai Cheng Weijia Fan Shi‐Ming Zhou Zhong Shi Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers Advanced Science heusler alloy spin–orbit torque spintronics |
| title | Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers |
| title_full | Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers |
| title_fullStr | Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers |
| title_full_unstemmed | Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers |
| title_short | Large Spin Hall Efficiency and Current‐Induced Magnetization Switching in Ferromagnetic Heusler Alloy Co2MnAl‐Based Magnetic Trilayers |
| title_sort | large spin hall efficiency and current induced magnetization switching in ferromagnetic heusler alloy co2mnal based magnetic trilayers |
| topic | heusler alloy spin–orbit torque spintronics |
| url | https://doi.org/10.1002/advs.202407171 |
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