Mechanico-electromagnetic waves in elastic dielectric crystals in a magnetic field

The mechanico-electromagnetic coupled waves under an external magnetic field are theoretically investigated, where elastic dielectric crystals with higher symmetry are taken into consideration. There are three types of the coupled waves: the predominantly electromagnetic waves, the predominantly mechanical transverse and longitudinal waves. Their propagation velocities, and the amplitude ratios of the polarization, the mechanical vibration, and the electromagnetic fields are obtained, which depend not only on the material constants but also on the suppressed magnetic intensity and its direction relative to the propagation direction.