Interaction of submillimeter electromagnetic waves with ferroelastic solid-state structures

The processes of propagation and refraction of the sub-mm waves in ferroelastics depend very strongly not only on the frequency of the wave but also on the temperature of a solid. The subject of this paper is the theoretical study of the nature of these dependences. We choose the complex dynamic dielectric susceptibility as the principal quantitative characteristic of the wave propagation in ferroelastics.