Phase relations in the system of (Na1/2Bi1/2)TiO3–PbTiO3. II. Dielectric property

The region of the phase diagram in the system (Na1/2Bi1/2)1−xPbxTiO3 from x=0 to 0.2 was established using dielectric measurements along with the phase diagram established in part I of this work. The diffuse phase transition behavior of solid solutions with low PbTiO3 content was also investigated. When x is lower than xrc (composition at which rhombohedral↔cubic transition exists) the rhombohedral↔tetragonal transition accompanied an anomaly in the ε(T) curve which shows an abrupt jump, followed by diffuse behavior of the ε(T) curve during heating. When xrc