Dielectric properties in solid solution systems pbzro3-Pb(M1/2 W1/2)O3 (M=Mg,Co)

Dielectric properties of antiferroelectric — antiferroelectric solid solution systems, (1-x)PbZr0 3-xPb(M W 0 3 (M Mg, Co), have been investigated. Both the systems reveal two-phase separation of perovskite and pyrochlore structures in the intermediate range (0. 3226607) of the solid solution systems. This paper deals with crystallographic, dielectric, and electrostrictive properties of the two systems with & 2. It was concluded that a new ferroelectric phase appears at room temperature in the range of O.O1 O. 2, although both of the endmembers are antiferroelectrics. Dielectric phase diagrams are proposed for each system.