Modeling of individual harmonics of the magnetoelectric effect using the COMSOL Multiphysics software package

A new algorithm for calculating the magnetoelectric effect in the COMSOL Multiphysics software package is proposed. It was based on the compilation of a linear composition of solutions of differential equations obtained at various points in time describing the magnetoelectric effect. The advantage of the described method was the possibility of isolating individual components corresponding to different harmonics of the magnetoelectric signal from the general spectrum of the magnetoelectric voltage. During the work, this method was used to calculate the field and amplitude dependences of the amplitudes of the first three harmonics of the magnetoelectric effect in two-layer composite structures based on magnetostrictive nickel and various wide-band piezoelectric conductors (aluminum nitride, gallium nitride and gallium oxide). It is shown that the dependences obtained using the method described in the work do not contradict the data available today, therefore, this calculation method is suitable for modeling promising magnetoelectric systems and will be able to find wide application in the future.