Magnetic Damping in Epitaxial Fe Alloyed with Vanadium and Aluminum

Abstract

To develop low-moment, low-damping metallic ferromagnets for power-efficient spintronic devices, it is crucial to understand how magnetic relaxation is impacted by the addition of nonmagnetic elements. Here, we compare magnetic relaxation in epitaxial Fe films alloyed with light nonmagnetic elements of V and Al. FeV alloys exhibit lower intrinsic damping compared to pure Fe, reduced by nearly a factor of 2, whereas damping in FeAl alloys increases with Al content. Our experimental and computational results indicate that reducing the density of states at the Fermi level, rather than the average atomic number, has a more significant impact in lowering damping in Fe alloyed with light elements. Moreover, FeV is confirmed to exhibit an intrinsic Gilbert damping parameter of $\simeq$0.001, among the lowest ever reported for ferromagnetic metals.

arXiv comment28 pages, 9 figures

References in corpus (25)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Restoring the density-gradient expansion for exchange in solids and surfaces
• Generalized gradient approximation for solids and their surfaces
• Spin Transfer Torques
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Ultra-low magnetic damping of a metallic ferromagnet
• Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
• Domain wall mobility, stability and Walker breakdown in magnetic nanowires
• Spin currents and spin superfluidity
• Ab-initio calculation of the Gilbert damping parameter via linear response formalism
• First-principles calculation of the Gilbert damping parameter via the linear response formalism with application to magnetic transition-metals and alloys
• Precise determination of the spectroscopic g-factor using broadband ferromagnetic resonance spectroscopy
• Scaling of intrinsic Gilbert damping with spin-orbital coupling strength
• Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
• Low relaxation rate in a low-Z alloy of iron
• Spin orbit precession damping in transition metal ferromagnets
• Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron
• Magnetic properties of ultra-thin 3d transition-metal binary alloys I: spin and orbital moments, anisotropy, and confirmation of Slater-Pauling behavior
• Magnetic properties in ultra-thin 3d transition metal alloys II: Experimental verification of quantitative theories of damping and spin-pumping
• Tunable damping, saturation magnetization, and exchange stiffness of half-Heusler NiMnSb thin films
• Spin transport and dynamics in all-oxide perovskite La${}_{2/3}$Sr${}_{1/3}$MnO${}_3$/SrRuO${}_3$ bilayers probed by ferromagnetic resonance
• The interplay of large two-magnon ferromagnetic resonance linewidths and low Gilbert damping in Heusler thin films
• Ferromagnetic resonance study of polycrystalline Fe_{1-x}V_x alloy thin films
• Perspective: (Beyond) spin transport in insulators

Cited by in corpus (7)

• Roadmap of spin-orbit torques
• Roadmap on Spin-Wave Computing
• Room-Temperature Intrinsic and Extrinsic Damping in Polycrystalline Fe Thin Films
• Absorption of Transverse Spin Current in Ferromagnetic NiCu: Dominance of Bulk Dephasing over Spin-Flip Scattering
• Vertically Graded Fe-Ni Alloys with Low Damping and a Sizeable Spin-Orbit Torque
• Diffusive and Fluid-like Motion of Homochiral Domain Walls in Easy-Plane Magnetic Strips
• Control of site occupancy by variation of the Zn and Al content in NiZnAl ferrite epitaxial films with low magnetic damping