BNT ceramics in paraelectric phase: dielectric properties

The paper describes the investigations of Nd doped barium titanate (BNT) ferroelectric ceramic materials prepared by solid state reaction techniques. The decrease of the Curie temperature with the increase of the Nd/sub 2/O/sub 3/ concentration from 0 to 28 wt % was observed. High density values of BNT ceramics were obtained by adding 0.5 mol % PbO substitutional for BaO. The samples were sintered at temperatures T/sub s/=1200+1260/spl deg/C. At room temperature, the materials are in paraelectric phase, suitable for high frequency applications.