Fig. 3: Effect of quenching process on ferroelectric properties of 0.15PT-0.85PST ceramics.
From: Self-powered temperature-changing system driven by wind energy
a Hysteresis loops of 0.15PT–0.85PST ceramics without quenching and with quenching times of 10–50 h at 303 K. b Hysteresis loops of 0.15PT–0.85PST without quenching at 303–423 K. c Summary of the maximum polarization intensities of 0.15PT–0.85PST without quenching and with quenching times of 10–50 h at 303 K and 423 K. d Relationships between the pyroelectric coefficient (∂P/∂T) and temperature (T) values of 0.15PT–0.85PST ceramics without quenching and with quenching times of 10–50 h. e, f Relationship between the adiabatic temperature variation ΔT and the temperature (T). The relationship between the entropy variation ΔS and the temperature (T). g Statistical summary of the adiabatic temperature variation ΔT and the temperature. h Olsen cycle diagram of 0.15PT–0.85PST ceramics without quenching and with i quenching times of 10–50 h
