Study of the effect of the width of a ZIG microwave guide on the spectra of surface and inverse bulk spin waves
Karina E. Zhumabekova 1,2, Pavel A. Zhironkin 1,2, Anna A. Manysheva 3, Aleksandr V. Sadovnikov 1,2,4; 1,2,3,4 Saratov State University, Saratov, Russia
Abstract
The study of spin waves (SWs) in ferrite structures is crucial for the development of magnon devices, where miniature waveguides serve as interconnect elements. In this work, the propagation of two main types of modes, bulk (BMSW) and surface (SSW), in a rectangular ZIG waveguide was investigated using micromagnetic simulations in MuMax3. The influence of the waveguide width and external magnetic field on the dispersion characteristics of SWs in the 3.8-5.8 GHz range was analyzed. The results showed that the narrowing of the waveguide drastically changes the spectrum: for OOMSV, the upper cutoff frequency and the boundaries of the spectrum increase due to dynamic demagnetization. For PMSV, the opposite trend is observed, with a decrease in frequencies due to the inhomogeneity of the internal field. The identified relationships between the waveguide geometry, the field, and the SV parameters open up opportunities for creating frequency-selective elements in magnon networks. This work was supported by the Russian Science Foundation (grant No. 23-79-30027).
Speaker
Zhumabekova K.E.
Saratov State University
Russia
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