A micro-structured ion-implanted magnonic crystal


A micro-structured ion-implanted magnonic crystal

Obry, B.; Pirro, P.; Braecher, T.; Chumak, A. V.; Osten, J.; Ciubotaru, F.; Serga, A. A.; Fassbender, J.; Hillebrands, B.

We investigate spin-wave propagation in a microstructured magnonic-crystal waveguide fabricated by localized ion implantation. The irradiation caused a periodic variation in the saturation magnetization along the waveguide. As a consequence, the spin-wave transmission spectrum exhibits a set of frequency bands, where spin-wave propagation is suppressed. A weak modification of the saturation magnetization by 7% is sufficient to decrease the spin-wave transmission in the band gaps by a factor of 10. These results evidence the applicability of localized ion implantation for the fabrication of efficient micron- and nano-sized magnonic crystals for magnon spintronic applications.

Keywords: magnonic-crystal; waveguide; ion implantation

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Publ.-Id: 19135