No abstract

In this work, we will reveal the regularities in the control of the dipole spin-wava spectra of in lateral heterostructures formed from two magnonic crystals with a piezoelectric layer placed on one of them. The electric field control of the spatial and transfer characteristics of dipole spin waves in lateral heterostructures is shown. Based on the finite element method, the influence of distributed elastic deformations on the magnitudes of internal magnetic fields in magnonic crystals is evaluated. Based on the results of numerical simulations, a physical interpretation of the transformation of the eigenmode spectrum of coupled magnon crystals is given.

The mechanisms of spin wave propagation in a magnonic-crystalline structure, which is a width-modulated magnetic microwaveguide loaded with a piezoelectric layer with a system of counter-pin electrodes, are considered. Computational modelling based on the finite element method has been used to estimate the transformation of the internal magnetic field in a magnonic crystal under the action of elastic deformations. The shift of the frequency band of the Bragg resonance and the depth of regression of the spin-wave signal at the frequency of the Bragg resonance when an electric potential is applied to the electrodes are observed. It is shown that changing the polarity of the electric field can effectively control the characteristics of the propagating spin waves and the spatial distribution of the dynamic magnetization intensity in the multiferroic structure.

In this work, using numerical and experimental studies, we have demonstrated the possibility of controlling the dipole spin-wave coupling in a lateral array of ferromagnetic stripes using local deformations. As an experimental demonstration of the investigated physical processes, a configuration of a magnonic structure with a piezoelectric layer and structured electrodes on its surface is proposed, and the technique of laser ablation with spatial resolution is used to structure the piezoelectric layer. The mechanisms for controlling the dipole coupling of spin waves by creating elastic deformations localized in the region of the maximums of the electric field are revealed. From an applied point of view, the results obtained can be used to create a class of information processing devices, such as demultiplexing systems with frequency-space selectivity, controlled simultaneously by an electric and magnetic field.