A study of the dielectric properties and diffuse phase transition of the (1-x)Pb(Yb/sub 1/2/Nb/sub 1/2/)O/sub 3/-xPbZrO/sub 3/ binary system

The dielectric properties and the behavior of the phase transition in the (1-x) Pb(Yb/sub 1/2/Nb/sub 1/2/)O/sub 3/-xPbZrO/sub 3/ (0/spl les/x/spl les/0.6) ceramic system have been investigated. For 0/spl les/x/spl les/0.3, the phase transition is relatively sharp and the dielectric constant approximately follows the Curie-Weiss law above the transition temperature. Beyond x=0.4, the temperature dependence of dielectric constant becomes broadened and the transition temperature shifts toward the high temperature with an increase in the measuring frequency.