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Ferromagnetic nanodisks for magnonic crystals and waveguides

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Spatial control of spin-wave modes in Ni80Fe20 antidot lattices by embedded Co nanodisks

Dirk Grundler

Combined all-electrical spin-wave and micro-focused Brillouin light scattering spectroscopies have been used to study spin-wave eigenmodes in bicomponent lattices formed by periodic Co nanodisks introduced in nanotroughs etched into a thin Ni80Fe20 film. W ...

2011

Tunable metamaterial response of a Ni80Fe20 antidot lattice for spin waves

Dirk Grundler

All-electrical spin-wave spectroscopy and frequency-resolved magneto-optical Kerr-effect measurements are combined to study spin waves propagating through a magnetic antidot lattice nanopatterned from a Ni80Fe20 thin film. Spin waves are injected from a pl ...

2011

Anisotropic Propagation and Damping of Spin Waves in a Nanopatterned Antidot Lattice

Dirk Grundler

All-electrical spin-wave spectroscopy, Brillouin light scattering, as well as the magneto-optical Kerr effect are combined to study spin-wave propagation through a magnetic antidot lattice nanopatterned into a Ni80Fe20 thin film. The propagation velocities ...

2010

Internal spin-wave confinement in magnetic nanowires due to zig-zag shaped magnetization

Dirk Grundler

We perform broadband spin-wave spectroscopy on thin submicrometer-wide Ni80Fe20 magnetic wires. Intentionally, we apply the in-plane magnetic field under an angle that is a few degrees off with respect to the in-plane hard-axis direction. In an intermediat ...

2008

Localization, confinement, and field-controlled propagation of spin waves in

Dirk Grundler

Spin-wave modes in Ni80Fe20 thin-film antidot lattices are investigated using micromagnetic simulations and a semianalytical theoretical approach. The simulations reveal a rich eigenmode spectrum consisting of edge and center modes. We find both spatially ...

2008

Spin-Wave Interference in Microscopic Rings

Dirk Grundler

We have studied the spin excitations of ferromagnetic rings and observed a distinct series of quantized modes in the vortex state. We attribute them to spin waves that circulate around the ring and interfere constructively. They form azimuthal eigenmodes o ...

2006