Critical anomalies of the velocity and absorption of sound in a quasi-one-dimensional ferroelectric material CsH2PO4
Yakushkin E. D., Baranov A. I., Shuvalov L. A.
It was discovered that, in contrast to known uniaxial ferroelectric materials, a cesium dihydrogen phosphate crystal has no long-range, dipole-dipole interaction, and the critical anomalies in this ferroelectric material are similar to those observed in systems with short-range interaction forces.