Microscopic magnetic structuring of a spin-wave waveguide by ion   implantation in a Ni(81)Fe(19) layer
  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. 
Bj\"orn Obry (1), Thomas Meyer (1), Philipp Pirro (1), Thomas   Br\"acher (1 and 2), Bert L\"agel (3), Julia Osten (4), Thom...
cond-mat.mes-hall