Attenuation of ultrasound in quasi-one-dimensional ferroelectrics
Aksenov V. L., Didyk A. Yu., Plakida N. M.
It is shown that the anomalies in propagation of ultrasound, observed in recent experiments, with a phase transition in quasi-one-dimensional ferroelectric CsiI2P04 are explained by the strong anisotropy of the spectrum of critical fluctuations of the order parameter.