Spin wave propagation in a strain-controlled magnonic crystal with a piezoelectric layer

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. Keywords: magnonics, straintronics, irregular structures.