Magnonic Bandgap Control in Coupled Magnonic Crystals

Author

Morozova, Mariya A. ; Grishin, Sergey V. ; Sadovnikov, Alexandr V. ; Sharaevskii, Yurii P. ; Nikitov, S.A.

Author_Institution

Metamaterials Lab., Saratov State Univ., Saratov, Russia

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

The periodic structure in the form of two coupled magnonic crystals (MCs) was considered for the first time. It was shown that the variation of coupling allows to control effectively the characteristics of the bandgaps in the spectrum of magnetostatic spin waves. Main features of formation of the bandgaps were investigated in the basis of theoretical and experimental results. The comparison with a periodic structure in the form of a single MC was provided. The possibility of formation of two frequency bandgaps and shift of the frequency bandgaps depending on coupling was demonstrated in the frequency region of the first Bragg resonance. It was shown that the control of bandgaps in such structure gives additional opportunities to create microwave filters and phase shifters with desired characteristics.

Keywords

energy gap; ferromagnetic materials; garnets; magnetic thin films; magnetostatic waves; magnons; periodic structures; spin waves; yttrium compounds; Bragg resonance; YIG; coupled magnonic crystals; ferromagnetic film; frequency region; magnetostatic spin wave spectrum; magnonic band gap control; microwave filters; periodic structure; phase shifters; Couplings; Crystals; Magnetic resonance; Magnetostatic waves; Magnetostatics; Photonic band gap; Magnonic crystals (MCs); spin waves;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2321611

Filename

6971524