fig7
Figure 7. (A) P-E hysteresis loops; (B) Wrec and η for S2 sample within the temperature range of 25-125 °C under 320 kV/cm; (C) P-E hysteresis loops; (D) Wrec and η for S2 sample within the frequency range of 1-200 Hz under 320 kV/cm. P-E: Polarization-electric field.
