Björn Obry, Thomas Meyer, Philipp Pirro, Thomas Brächer, Bert Lägel, Julia Osten, Thomas Strache, Jürgen Fassbender, Burkard Hillebrands
We investigate the spin-wave excitation in microscopic waveguides fabricated by localized Cr+ ion implantation in a ferromagnetic Ni(81)Fe(19) film. We demonstrate that spin-wave waveguides can be conveniently made by this technique. The magnetic patterning technique yields an increased damping and a reduction in saturation magnetization in the implanted regions that can be extracted from Brillouin light scattering measurements of the spin-wave excitation spectra. Furthermore, the waveguide performance as well as the internal field of the waveguide depend on the doping fluence. The results prove that localized ion implantation is a powerful tool for the patterning of magnon spintronic devices.
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http://arxiv.org/abs/1211.4786
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