Magnetic properties in ultra-thin 3d transition metal alloys II: Experimental verification of quantitative theories of damping and spin-pumping

Abstract

A systematic experimental study of Gilbert damping is performed via ferromagnetic resonance for the disordered crystalline binary 3d transition metal alloys Ni-Co, Ni-Fe and Co-Fe over the full range of alloy compositions. After accounting for inhomogeneous linewidth broadening, the damping shows clear evidence of both interfacial damping enhancement (by spin pumping) and radiative damping. We quantify these two extrinsic contributions and thereby determine the intrinsic damping. The comparison of the intrinsic damping to multiple theoretical calculations yields good qualitative and quantitative agreement in most cases. Furthermore, the values of the damping obtained in this study are in good agreement with a wide range of published experimental and theoretical values. Additionally, we find a compositional dependence of the spin mixing conductance.

References in corpus (23)

• Enhanced Gilbert Damping in Thin Ferromagnetic Films
• Nonlocal magnetization dynamics in ferromagnetic heterostructures
• Ultra-low magnetic damping of a metallic ferromagnet
• Identification of the dominant precession damping mechanism in Fe, Co, and Ni by first-principles calculations
• Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
• Interface enhancement of Gilbert damping from first-principles
• Experimental Investigation of Temperature-Dependent Gilbert Damping in Permalloy Thin Films
• Ab-initio calculation of the Gilbert damping parameter via linear response formalism
• Intrinsic and non-local Gilbert damping in polycrystalline nickel studied by Ti:Sapphire laser fs spectroscopy
• First-principles calculation of the Gilbert damping parameter via the linear response formalism with application to magnetic transition-metals and alloys
• Radiative damping in wave guide based FMR measured via analysis of perpendicular standing spin waves in sputtered Permalloy films
• A unified first-principles study of Gilbert damping, spin-flip diffusion and resistivity in transition metal alloys
• Mode- and size-dependent Landau-Lifshitz damping in magnetic nanostructures: Evidence for non-local damping
• Spin transport parameters in metallic multilayers determined by ferromagnetic resonance measurements of spin pumping
• First-principles calculations of magnetization relaxation in pure Fe, Co, and Ni with frozen thermal lattice disorder
• Magnetic properties of ultra-thin 3d transition-metal binary alloys I: spin and orbital moments, anisotropy, and confirmation of Slater-Pauling behavior
• Wavenumber-dependent Gilbert damping in metallic ferromagnets
• Spin-Scattering Rates in Metallic Thin Films Measured by Ferromagnetic Resonance Damping Enhanced by Spin-Pumping
• Transverse dynamical magnetic susceptibilities from regular static density functional theory: Evaluation of damping and g-shifts of spin-excitations
• Nonlocal torque operators in ab initio theory of the Gilbert damping in random ferromagnetic alloys
• Detection of the dc inverse spin Hall effect due to spin pumping in a novel meander-stripline geometry
• The role of electron scattering in magnetization relaxation in thin Ni${}_{81}$Fe${}_{19}$ films
• Increased magnetic damping of a single domain wall and adjacent magnetic domains detected by spin torque diode in a nanostripe

Cited by in corpus (21)

• Roadmap of spin-orbit torques
• Determination of spin Hall effect and spin diffusion length of Pt from self-consistent fitting of damping enhancement and inverse spin-orbit torque measurements
• Conductivity-Like Gilbert Damping due to Intraband Scattering in Epitaxial Iron
• Calculating the transport properties of magnetic materials from first-principles including thermal and alloy disorder, non-collinearity and spin-orbit coupling
• Dephasing of Transverse Spin Current in Ferrimagnetic Alloys
• Non-local Gilbert damping tensor within the torque-torque correlation model
• Spin-Hall and Anisotropic Magnetoresistance in Ferrimagnetic Co-Gd / Pt layers
• Magnetic Damping in Epitaxial Fe Alloyed with Vanadium and Aluminum
• Ultrafast Demagnetization through Femtosecond Generation of Non-thermal Magnons
• Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences
• Magnon scattering in the transport coefficients of CoFe alloys
• Influence of non-local damping on magnon properties of ferromagnets
• Heat-conserving three-temperature model for ultrafast demagnetization of 3d ferromagnets
• Temperature dependence of the magnon-phonon interaction in high overtone bulk acoustic resonator-ferromagnetic thin film hybrids
• Orbital-excitation-dominated magnetization dissipation and quantum oscillation of Gilbert damping in Fe films
• Estimation of spin-orbit torques in the presence of current-induced magnon creation and annihilation
• Absorption of Transverse Spin Current in Ferromagnetic NiCu: Dominance of Bulk Dephasing over Spin-Flip Scattering
• Sub-Nanosecond Spin-Transfer Torque in an Ensemble of Superparamagnetic-Like Nanomagnets
• Vertically Graded Fe-Ni Alloys with Low Damping and a Sizeable Spin-Orbit Torque
• Computation of High Frequency Magnetoelastic Waves in Layered Materials
• Electron-Phonon Scattering governs both Ultrafast and Precessional Magnetization Dynamics in Co-Fe Alloys