Diffuse phase transition and high-temperature dielectric relaxation study on (Bi0.5Na0.5)1-xBaxTiO3 ceramics

High Energy Storage Density and Impedance Response of PLZT2/95/5 Antiferroelectric Ceramics

“…For PLZT2/95/5 ceramics, the activation energy E a was about 1.61 eV. Based on our result of E a value, it can be reasonably concluded that the high-temperature dielectric behavior of PLZT2/95/5 ceramics may be ascribed to the dynamic thermal process of ionized OVs [39]. The results were coincided well with the dielectric behavior observed in the temperature of the dielectric spectrum.…”

“…The Z ″/ Z ″ max value exhibited a peak at each temperature and moved to higher frequency with increasing temperature, which can be as an evidence of hopping mechanism, in which the numbers of polaron will gradually decrease as it hopped with gradual decrease of electron lattice coupling [39]. In perovskite materials, the major mode of charge transport is multiple hopping processes.…”

B-site non-stoichiometric (Pb0.97La0.02)(Zr0.95Ti0.05)O3antiferroelectric ceramics for energy storage

“…A obvious temperature-dependent peak under a characteristic frequency was obtained for all compositions, which shift towards the high frequency with an increasing temperature. Also, Z 00 =Z 00 max peak values will move toward higher frequency with increasing temperature, hopping mechanism could be account for it, in which the numbers of polaron will gradually decrease as it hopped with gradual decrease of electron lattice coupling [23].…”