Formation features of stopbands in bicomponent magnetic metasurfaces

A. S. Bir^a, D. V. Romanenko^a, S. V. Grishin^a, S. A. Nikitov<sup>ab

a</sup> Saratov State University
^b Kotelnikov Institute of Radioengineering and Electronics of the Russian Academy of Sciences, Moscow

Abstract: The results of an experimental study and micromagnetic simulation of the formation features of the stopbands in bicomponent magnetic metasurfaces are presented. The metasurfaces consist of two magnetic materials: a dielectric film of yttrium iron grant (YIG) of micron thickness and a ferromagnetic metal (iron) film of nanometer thickness. From the iron film, a one-dimensional periodic structure in the form of submillimeter-sized stripes is formed on the free YIG film surface. It was found that in the spectrum of a magnetostatic surface spin wave (MSSW) propagating in the YIG film, there are the stopbands of three types. One of them are due to the reflection of the MSSW from the periodic structure (Bragg resonance), another by the resonance phenomena of spin waves inside the strips themselves, and the third by the MSSW resonances in the free YIG film region located between the input microstrip antenna and the closest (first) iron strip to it.

Keywords: metasurface, ferromagnetic, spin wave.

Received: 22.05.2025
Revised: 11.08.2025
Accepted: 30.08.2025

DOI: 10.61011/PJTF.2026.01.61917.20381

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