Phase transition and dielectric properties of La-doped Pb(Zr,Sn,Ti)O3 antiferroelectric ceramics under hydrostatic pressure and temperature

Phase transition and dielectric properties of La-doped Pb(Zr,Sn,Ti)O3 antiferroelectric ceramics under hydrostatic pressure and temperature have been studied, and effects of temperature on the pressure-induced phase transition and the dielectric property dependence on the applied hydrostatic pressure have been investigated. It has been found from experimental results that the ferroelectric–antiferroelectric phase transition pressure is decreased with increasing temperature, and that when applying hydrostatic pressure the ferroelectric–antiferroelectric phase transition temperature is decreased and antiferroelectric–paraelectric phase transition temperature is increased. All these observed phenomena are very useful and informative for deep understanding of the behaviors of temperature and pressure-induced dielectric frequency dispersion and diffuse phase transition.