A magnetic vortex core in a ferromagnetic circular nanodot has a resonance frequency originating from the confinement of the vortex core. By the micromagnetic simulation including the spin-transfer torque, we show that the vortex core can be resonantly excited by an AC (spin-polarized) current through the dot and that the resonance frequency can be tuned by the dot shape. The resistance measure...

Combined power of 59Co Internal Field nuclear magnetic resonance (IF NMR) and ferromagnetic (FMR) allows studying structure morphology metallic Co nanoparticles.

Abstract A whole series of titania nanocomposites modified with reduced graphene oxide (rGO) was prepared using solvothermal method followed by calcination. Modification rGO has been found to lead better photocatalytic properties. The highest performance obtained at calcination temperature 600°C. Electron paramagnetic resonance/ferromagnetic resonance measurements showed oxygen defects and ferr...

We report the theoretical investigation of the shot noise of the spin current (S(σ)) and the spin transfer torque (S(τ)) for non-collinear spin polarized transport in a spin-valve device which consists of a normal scattering region connected by two ferromagnetic electrodes (MNM system). Our theory was developed using the non-equilibrium Green's function method, and general nonlinear S(σ) - V an...

We investigate ferromagnetic resonance (FMR) modulation in $d$-wave superconductor (SC)/ferromagnetic insulator (FI) bilayer systems theoretically. The of the Gilbert damping these reflects existence nodes SC and shows power-law decay characteristics within low-temperature low-frequency limit. Our results indicate effectiveness use spin pumping as a probe technique to determine symmetry unconve...

We utilized microwave spectroscopy to study the magnetization oscillations locally induced in a Permalloy film by a pure spin current, which is generated due to the spin Hall effect in an adjacent Pt layer. The oscillation frequency is lower than the ferromagnetic resonance of Permalloy, indicating that the oscillation forms a self-localized nonpropagating spin-wave soliton. At cryogenic temper...