Some dielectric properties of the Cs(H1-xDx2PO4crystals

Abstract
The temperature measurements of the P(E) dependences and low-frequency dielectric constant in Cs(H1-xDx 2PO4 single crystals are reported. The shapes of the P(E) dependences and of the dielectric anomaly are quite different from those in ordinary uniaxial ferroelectrics. The results are interpreted as support for suggestion that in Cs(H1-xDx 2PO4 crystals long-range order does not develop at Tc and a transition region extends to the temperature range below Tc