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Calculations of the FMR Spectrum in 1D Magnonic Crystals


M. Mruczkiewicz1 M. Krawczyk1 V.K. Sakharov2 Yu. V. Khivintsev2 Yu. A. Filimonov2 S. A. Nikitov3
1Nanomaterials Physics Division, Faculty of Physics, Adam Mickiewicz University, Poznań, Poland
2Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences (Saratov Branch), Saratov, Russia
Laboratory “Metamaterials”, Chernyshevsky Saratov State University, Saratov, Russia
3Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia
Laboratory “Metamaterials”, Chernyshevsky Saratov State University, Saratov, Russia


FMR signal of 1D magnonic crystal composed of alternating 50 nm thick stripes of cobalt and permalloy with 6.6 and 3.4 micrometers width, respectively.

FMR spectra of the periodic microstructures (one-dimensional magnonic crystals, 1D MCs) were obtained using COMSOL with use partial differential equation interface. Results of these calculations were successfully compared with an experimental data for Damon-Eshbach (DE) and Backward-Volume (BV) geometries. The presented tool allows to analyze periodic structures with various geometries and material parameter compositions, being at the same time a tool that can serve for optimization and tuning the absorption of electromagnetic waves in ferromagnetic materials.

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