A micro-structured ion-implanted magnonic crystal

Abstract

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.

4 pages, 3 figures, submitted to Applied Physics Letters

References in corpus (4)

• Storage-recovery phenomenon in magnonic crystal
• Magnonic band gap design by the edge modulation of micro-sized waveguides
• Microscopic magnetic structuring of a spin-wave waveguide by ion implantation in a Ni(81)Fe(19) layer
• Spin-wave modes and band structure of rectangular CoFeB antidot lattices

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