Dispersion and spin wave “tunneling” in nanostructured magnetostatic spin waveguides
A Kozhanov, D Ouellette, M Rodwell, SJ Allen…�- Journal of Applied�…, 2009 - pubs.aip.org
Magnetostatic spin wave dispersion and loss are measured in micron scale spin
waveguides in ferromagnetic, metallic CoTaZr. Results are in good agreement with model
calculations of spin wave dispersion. The measured attenuation lengths, of the order of 3 μ
m, are several of orders of magnitude shorter than that predicted from eddy currents in
these thin wires. Spin waves effectively “tunnel” through air gaps, produced by focused ion
beam etching, as large as 1.5 μ m.Small scale magnetostatic spin wave devices are�…
waveguides in ferromagnetic, metallic CoTaZr. Results are in good agreement with model
calculations of spin wave dispersion. The measured attenuation lengths, of the order of 3 μ
m, are several of orders of magnitude shorter than that predicted from eddy currents in
these thin wires. Spin waves effectively “tunnel” through air gaps, produced by focused ion
beam etching, as large as 1.5 μ m.Small scale magnetostatic spin wave devices are�…