Quantum paraelectric-like behavior of the paratitanate family of materials

Quantum paraelectric-like behavior has been observed in the paratitanate fa mily of materials. Experiments performed on the dielectric properties of (L a1/2Na1/2)TiO3 and (Nd1/2Na1/2)TiO3 over the temperature range 4 K-300 K su ggest quantum paraelectric-like behavior and the dielectric data fits Barre tt's expression. Other characteristics known to possess quantum paraelectri cs, like a strong E-field dependence of dielectric constant at low temperat ure, were not observed and are discussed in this paper. (C) 1999 Elsevier S cience Ltd. All rights reserved.