兰州大学机构库 >物理科学与技术学院
Large damping-like torque and efficient current-induced magnetization reversal in Ti/Tb-Co/Cr structures
Guo, Yonghai; Zhang, Yu; Lv, Wenbo; Wang, Bo; Zhang, Bo; Cao, JW(曹江伟)
2023-07-10
Source PublicationAPPLIED PHYSICS LETTERS   Impact Factor & Quartile
ISSN0003-6951
Volume123Issue:2
page numbers5
AbstractSeeking the magnetic heterostructures with large current-induced torque efficiency is currently one of the core hotspots in spintronics. In this work, we report the large and composition-dependent damping-like (DL) torque in the structure consisting of light metal Cr and Ti layers and a ferrimagnetic Tb-Co layer. The DL torque efficiency in the structures reaches a maximum (around −0.55) as the Tb content in the Tb-Co layer is in the range of 0.15-0.18. This composition-dependent behavior is different from that observed in the usual heavy-metal/ferrimagnetic structures. We also demonstrated the efficient current-induced magnetization reversal in these structures with a low threshold current density down to 8 × 10 10 A / m 2 . In comparison, only very low efficiency values of −0.06 and −0.086 are obtained in the Ti/Co/Cr and Ti/Tb-Co/SiN control samples, respectively, suggesting that the large DL torque in the Ti/Tb-Co/Cr structures may originate from the orbital Hall effect in the Cr metal. By fitting the Cr layer thickness dependence of the torque efficiency with a simple orbital current diffusion model, we obtained an effective orbital Hall angle of − 0.57 ± 0.02 for the Ti/Tb0.85Co0.15/Cr samples. This work demonstrated the possibility to enhance the orbital torque effect by using the magnetic layer containing the element with strong spin-orbit coupling. © 2023 Author(s).
KeywordBinary alloys Chromium Cobalt Cobalt alloys Damping Efficiency Magnetization reversal Control samples Current induced magnetization reversal Ferrimagnetic structure Ferrimagnetics Hotspots Large current Layer thickness Low threshold current density Magnetic heterostructures Orbitals
PublisherAmerican Institute of Physics Inc.
DOI10.1063/5.0158131
Indexed ByEI ; SCIE
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:001029367700003
EI Accession Number20233014430933
EI KeywordsTorque
EI Classification Number543.1 Chromium and Alloys ; 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals ; 701.2 Magnetism: Basic Concepts and Phenomena ; 913.1 Production Engineering ; 931.1 Mechanics ; 931.2 Physical Properties of Gases, Liquids and Solids
Original Document TypeJournal article (JA)
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/532196
Collection物理科学与技术学院
Corresponding AuthorCao, Jiangwei
Affiliation
Key Laboratory for Magnetism and Magnetic Materials, the Ministry of Education, Lanzhou University, Lanzhou; 730000, China
First Author AffilicationSchool of Physical Science and Technology
Corresponding Author AffilicationSchool of Physical Science and Technology
Recommended Citation
GB/T 7714
Guo, Yonghai,Zhang, Yu,Lv, Wenbo,et al. Large damping-like torque and efficient current-induced magnetization reversal in Ti/Tb-Co/Cr structures[J]. APPLIED PHYSICS LETTERS,2023,123(2).
APA Guo, Yonghai,Zhang, Yu,Lv, Wenbo,Wang, Bo,Zhang, Bo,&Cao, Jiangwei.(2023).Large damping-like torque and efficient current-induced magnetization reversal in Ti/Tb-Co/Cr structures.APPLIED PHYSICS LETTERS,123(2).
MLA Guo, Yonghai,et al."Large damping-like torque and efficient current-induced magnetization reversal in Ti/Tb-Co/Cr structures".APPLIED PHYSICS LETTERS 123.2(2023).
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