Phase Transitions in Solid Solutions of PbZrO 3 and PbTiO 3 (II) X-ray Study

The phase diagram of the whole range of the PbZrO 3 -PbTiO 3 system was determined by the dielectric and dilatometric measurements. According to the reason shown in part I, this phase diagram can be divided into three regiors; paraelectric, ferroelectric and antiferroelectric phases. The crystal structure of this system was determined by the Debye photographs. In the antiferroelectric region solid solutions have a tetragonal modification of perovskite structure with c / a 1 without any superstructure.