SIMULATION OF MAGNETIC MICRO-AND NANOSTRUCTURES USING THE METHOD OF THE WAVE TRANSMISSION MATRIX

Drozdovsky A.V, Vitko V.V, Lanina M.A, Romanenko D.V, Sheshukova S.E, Kondrashov A.V, Nikitin A.A, Semisalova A.S, Putrolaynen V.V, Kundozererva T.V

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The article contains the original results of the theoretical study of the effect of the magnetic periodic structure length obtained by the authors using the wave transmission matrix method. As a object of investigation was chosen a single-crystal film waveguide of yttrium iron garnet containing inhomogeneities in the form of periodic grooves. It is shown that the frequency dependence of the transmission of spin waves (frequency response) of the finite length magnon crystal is characterized by alternating bandwidths with small and large losses. The stop bands on dispersion characteristics of the final magnon crystal appear as areas of the «knee» with its dependence on the frequency of the wave number, different from the dispersion relation of the free YIG film. The study showed at the length of the path is equal a finite number of periods of the magnon crystal, near the Bragg resonance frequency, spin waves experiencing a greater attenuation than in other regions of the spectrum. The slope of the dispersion characteristics at stop band depends on the length of the magnon crystal.

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Дроздовский А.В, Витько В.В, Ланина М.А, Романенко Д.В, Шешукова С.Е, Кондрашов А.В, Никитин А.А, Семисалова А.С, Путролайнен В.В, Кундозерова Т.В МОДЕЛИРОВАНИЕ МАГНИТНЫХ МИКРО- И НАНОСТРУКТУР МЕТОДОМ ВОЛНОВЫХ МАТРИЦ ПЕРЕДАЧИ // Научное обозрение. Физико-математические науки . 2020. № 1. С. 28-29;
URL: https://physics-mathematics.ru/en/article/view?id=28 (дата обращения: 24.06.2026).