Collective spin waves in high-density two-dimensional arrays of FeCo nanowires.
basic_science · Level V
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Abstract
Brillouin measurements have been made of the spin dynamics of high-density two-dimensional hexagonally ordered 20 nm diameter Fe48Co52 nanowire arrays, with various interwire spacings, as a function of longitudinal magnetic field. The experimental data are analyzed within the Arias-Mills theory based on interwire dipolar couplings in the arrays. The results provide conclusive evidence of collective spin waves arising from the dipolar coupling which is manifested as a reduction in spin wave frequency with decreasing interwire spacing.
Medical subject headings
- Cobalt
- Crystallization
- Electric Wiring
- Iron Compounds
- Magnetics
- Nanotechnology
- Nanotubes