Magnonic Bandgaps in Metalized 1-D YIG Magnonic Crystals

M Mruczkiewicz,E S Pavlov,S L Vysotskii,Maciej Krawczyk,Yuri Filimonov,S A Nikitov

Magnetics, IEEE Transactions（2014）

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摘要

We investigate theoretically and experimentally magnonic bandgaps in a 1-D magnonic crystal consisting of a yttrium iron garnet film with periodically modulated thickness in contact with a metal. The theoretical model is based on the frequency-domain finite element method. The presented measurements of the transmitted spin-wave signal were performed with a vector network analyzer with coplanar and microstripe waveguide antennas for a magnonic crystal with and without metallic overlayer, respectively. The obtained results confirm that the presence of a metallic layer on top of the magnonic crystal shifts up the frequency of magnonic bandgaps.

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关键词

finite element analysis,frequency-domain analysis,garnets,magnetic thin films,magnons,spin waves,yttrium compounds,y3ig,coplanar waveguide antennas,frequency-domain finite element method,magnonic bandgaps,metalized 1d yig magnonic crystals,metallic overlayer,microstripe waveguide antennas,periodically modulated thickness,theoretical model,transmitted spin-wave signal,vector network analyzer,yttrium iron garnet film,magnonic crystals,nonreciprocity,spin waves (sws)

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