Nonlinear self-action of sound waves in an antiferromagnet with easy-plane anisotropy
Preobrazhenskii V.L., Savchenko M.A., Ekonomov N.A.
Results are reported of observation of nonlinear self-action of sound oscillations in single-crystal hematite. It is shown that the acoustic nonlinearity of the crystal, which is responsible for the effect, is due to magnetoelastic coupling.