A single crystal with nominal composition Pb(Mg_1/3Nb_2/3)O₃-32PbTiO₃ (PMN-32PT) was grown by the Bridgman technique. Crystal orientation was determined using the rotating orientation X-ray diffraction (RO-XRD). Element distribution was measured along different directions using inductively coupled plasma-mass spectrometry (ICP-MS). The effect of the element segregation along axial and radial directions on the electrical properties of the PMN-32PT crystal was investigated. It is indicated that the electrical properties of the samples along the axial direction were strongly dependent on the PT (PbTiO₃) content. With the increase of the PT content, the piezoelectric coefficient and remnant polarization were improved. Differently, the electrical properties of the samples along the radial direction were mainly determined by the ratio of the Nb and Mg. The reasons for the element segregation and electrical properties varied with the composition were discussed.

Antiferroelectric 0.94(Bi_0.534Na_0.5)TiO₃-0.06BaTiO₃ ceramics were prepared using a solid-state reaction method, involving the addition of excessive amounts of Bi₂O₃. The resulting ceramics featured a very high phase transition temperature (T _m ∼330°C), from the antiferroelectric to the paraelectric phase, and a low depolarization temperature (T _d < 25°C). The broad temperature range, within which antiferroelectric properties are retained, of the prepared materials indicates their higher potential over lead-based antiferroelectric ceramics such as PZT-based materials that exhibit a lower T _m ⩽ 170°C. The lower T _d and higher T _m obtained values, relative to those reported in the literature, are believed to be due to the formation of A-site vacancies originating from the incorporation of excess Bi into the perovskite structure of the studied sample. In addition, the synthesized sample shows a high dielectric constant of ∼1460, in a temperature range of 50–150°C at 1 kHz, and a high energy storage density of 0.71 J/cm³, which is an asset in energy storage capacitor applications.