4 papers
Interactions of spin waves with a magnetic vortex
J. P. Park, P. A. Crowell
We have investigated azimuthal spin-wave modes in magnetic vortex structures using time-resolved Kerr microscopy. Spatially resolved phase and amplitude spectra of ferromagnetic di…
Imaging of Spin Dynamics in Closure Domain and Vortex Structures
J. P. Park, P. Eames, D. M. Engebretson +2
Time-resolved Kerr microscopy is used to study the excitations of individual micron- scale ferromagnetic thin film elements in their remnant state. Thin (18 nm) square elements wit…
Spatially Resolved Dynamics of Localized Spin-Wave Modes in Ferromagnetic Wires
J. P. Park, P. Eames, D. M. Engebretson +2
We have observed localized spin-wave modes in individual thin-film ferromagnetic wires using time-resolved Kerr microscopy as a micron-scale spectroscopic probe. The localization i…
Time-resolved ferromagnetic resonance in epitaxial Fe1-xCox films
D. M. Engebretson, S. Zellinger, L. C. Chen +2
Magnetodynamics in epitaxial Fe1-xCox films on GaAs (100) are studied using time-resolved ferromagnetic resonance, in which the free precession of the magnetization after an impuls…