Anisotropic magnetic damping and spin-orbit torque in epitaxial FeV heterostructures

Yangping Wang; Chenyu Zhang; Ze Yan; Cuimei Cao; Mingfang Zhang; Shiwei Chen; Junpeng Pan; Yingying Lu; Yong Hu; Yang Xu; Qingfeng Zhan

doi:10.1063/5.0288227

Anisotropic magnetic damping and spin-orbit torque in epitaxial FeV heterostructures

Yangping Wang, Chenyu Zhang, Ze Yan, Cuimei Cao, Mingfang Zhang, Shiwei Chen, Junpeng Pan, Yingying Lu, Yong Hu, Yang Xu, Qingfeng Zhan

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

Abstract

We investigated the anisotropy of magnetic damping and spin-orbit torque (SOT) in epitaxial Fe₇₇V₂₃/amorphous Al and fully epitaxial Fe₇₇V₂₃/Pt bilayers grown on MgO(001) substrates using ferromagnetic (FM) resonance and harmonic Hall measurements. The magnetic damping of the epitaxial FeV film is revealed to be anisotropic in the FeV/Al bilayer without any spin sink, which is confirmed by the spin-pumping effect in the FeV/Pt bilayers with spin sink. The spin transport between the FeV layer with anisotropic magnetic damping and the Pt layer is anisotropic, which demonstrates by the measurement of the anisotropic SOT efficiency. The anisotropic magnetic damping and SOT can be attributed to the variation of the spin-orbit coupling in different crystallographic directions of the FeV film. These results provide insights and effective pathways for constructing anisotropic charge-to-spin conversion systems based on ferromagnetic materials with anisotropic magnetic damping.

Original language	English
Article number	112402
Journal	Applied Physics Letters
Volume	127
Issue number	11
DOIs	https://doi.org/10.1063/5.0288227
State	Published - 15 Sep 2025

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10.1063/5.0288227

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title = "Anisotropic magnetic damping and spin-orbit torque in epitaxial FeV heterostructures",

abstract = "We investigated the anisotropy of magnetic damping and spin-orbit torque (SOT) in epitaxial Fe77V23/amorphous Al and fully epitaxial Fe77V23/Pt bilayers grown on MgO(001) substrates using ferromagnetic (FM) resonance and harmonic Hall measurements. The magnetic damping of the epitaxial FeV film is revealed to be anisotropic in the FeV/Al bilayer without any spin sink, which is confirmed by the spin-pumping effect in the FeV/Pt bilayers with spin sink. The spin transport between the FeV layer with anisotropic magnetic damping and the Pt layer is anisotropic, which demonstrates by the measurement of the anisotropic SOT efficiency. The anisotropic magnetic damping and SOT can be attributed to the variation of the spin-orbit coupling in different crystallographic directions of the FeV film. These results provide insights and effective pathways for constructing anisotropic charge-to-spin conversion systems based on ferromagnetic materials with anisotropic magnetic damping.",

author = "Yangping Wang and Chenyu Zhang and Ze Yan and Cuimei Cao and Mingfang Zhang and Shiwei Chen and Junpeng Pan and Yingying Lu and Yong Hu and Yang Xu and Qingfeng Zhan",

note = "Publisher Copyright: {\textcopyright} 2025 Author(s).",

year = "2025",

month = sep,

day = "15",

doi = "10.1063/5.0288227",

language = "英语",

volume = "127",

journal = "Applied Physics Letters",

issn = "0003-6951",

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TY - JOUR

T1 - Anisotropic magnetic damping and spin-orbit torque in epitaxial FeV heterostructures

AU - Wang, Yangping

AU - Zhang, Chenyu

AU - Yan, Ze

AU - Cao, Cuimei

AU - Zhang, Mingfang

AU - Chen, Shiwei

AU - Pan, Junpeng

AU - Lu, Yingying

AU - Hu, Yong

AU - Xu, Yang

AU - Zhan, Qingfeng

PY - 2025/9/15

Y1 - 2025/9/15

N2 - We investigated the anisotropy of magnetic damping and spin-orbit torque (SOT) in epitaxial Fe77V23/amorphous Al and fully epitaxial Fe77V23/Pt bilayers grown on MgO(001) substrates using ferromagnetic (FM) resonance and harmonic Hall measurements. The magnetic damping of the epitaxial FeV film is revealed to be anisotropic in the FeV/Al bilayer without any spin sink, which is confirmed by the spin-pumping effect in the FeV/Pt bilayers with spin sink. The spin transport between the FeV layer with anisotropic magnetic damping and the Pt layer is anisotropic, which demonstrates by the measurement of the anisotropic SOT efficiency. The anisotropic magnetic damping and SOT can be attributed to the variation of the spin-orbit coupling in different crystallographic directions of the FeV film. These results provide insights and effective pathways for constructing anisotropic charge-to-spin conversion systems based on ferromagnetic materials with anisotropic magnetic damping.

AB - We investigated the anisotropy of magnetic damping and spin-orbit torque (SOT) in epitaxial Fe77V23/amorphous Al and fully epitaxial Fe77V23/Pt bilayers grown on MgO(001) substrates using ferromagnetic (FM) resonance and harmonic Hall measurements. The magnetic damping of the epitaxial FeV film is revealed to be anisotropic in the FeV/Al bilayer without any spin sink, which is confirmed by the spin-pumping effect in the FeV/Pt bilayers with spin sink. The spin transport between the FeV layer with anisotropic magnetic damping and the Pt layer is anisotropic, which demonstrates by the measurement of the anisotropic SOT efficiency. The anisotropic magnetic damping and SOT can be attributed to the variation of the spin-orbit coupling in different crystallographic directions of the FeV film. These results provide insights and effective pathways for constructing anisotropic charge-to-spin conversion systems based on ferromagnetic materials with anisotropic magnetic damping.

UR - https://www.scopus.com/pages/publications/105015979283

U2 - 10.1063/5.0288227

DO - 10.1063/5.0288227

M3 - 文章

AN - SCOPUS:105015979283

SN - 0003-6951

VL - 127

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 112402

ER -

Anisotropic magnetic damping and spin-orbit torque in epitaxial FeV heterostructures

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