ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)


магнитостатическая волна

Numerical simulation of magnetostatic waves propagation in coupled meander-type magnon crystals

Purpose of the work is to generalize the results of numerical studies for coupled magnonic meander structures in the case of the propagation of various types of magnetostatic waves in such structures. Methods. In order to solve the problems two well-known methods were used – finite elements and finite differences for coupled ferromagnetic structures. For the numerical solution with the finite element method in the magnetostatic approximation, the magnetostatic equations derived from Maxwell’s equations were used.

Численное моделирование распространения магнитостатических волн в связанных магнонных кристаллах меандрового типа

Цель работы cостоит в обобщении результатов численных исследований для связанных магнонных меандровых структур в случае распространения в таких структурах разных типов магнитостатических волн. Методы. Для решения поставленных задач использовалось два известных метода – конечных элементов и конечных разностей для связанных ферромагнитных структур. Для численного решения методом конечных элементов в магнитостатическом приближении использовались уравнения магнитостатики, полученные из уравнений Максвелла.

Passage of the magnetostatic wave propagating through the lattice on the basis of the magnon crystal

The paper presents the results related to the construction of a model based on the coupled waves to describe the characteristics of magnetostatic waves passing through the structure on the basis of one-dimensional magnon crystal at various geometric parameters of the structure and at finite values of the input power.

Chaotic microwave pulse generation in wideband spin­wave and vacuum oscillators of chaos under external periodical influence

The non-autonomous generation of chaotic microwave pulses in the wideband chaos oscillators is experimentally investigated. Nonlinearity of a spin-wave transmission line is a cause of chaotic dynamics of the spin-wave chaos oscillator and nonlinearity of a TWT amplifier is a cause of chaotic dynamics of the other chaos oscillator. It is shown, that in both cases, the generation of chaotic microwave pulses is observed when an external pulsemodulated microwave signal has a certain power level and its carrier is detuned from a central frequency of a chaotic signal.

Features of formation of band gaps in coupled structures based on magnonic crystals

There are introduced ferromagnetic periodic structures consist of two coupled magnonic crystals and related magnonic and crystal film, separated by a dielectric layer. The dispersion equation made for magnetostatic waves, that propagate in such structures and identified main features of formation band gaps and a comparison with a periodic structure of one magnonic crystal was made.