The doelectric and polarization studies of the system of solid solutions PbxSr1-xTiO3 with x = 0.005, 0.02, 0.04 in a broad frequency and temperature range are performed. The temperature of the ferroelectric phase transition in the solid solutions is determined. The temperature behaviour of the remanent polarization at the phase transition is established.

Keywords: quantum paraelectric, strontium titanate, dielectric permittivity, remanent poalrization, superparaelectric state, phase transition