Author(s)

Natheer B. Mahmood, Emad K. Al-Shakarchi

Physics Department, College of Science, Al-Nahrain University, Baghdad, Iraq.

Hysteresis loop measurements performed both experimentally for Bismuth Sodium Titanate (BNT) and Bismuth Potassium Titanate (BKT) samples using modified Sawyer-Tower Circuit. The experiment showed that the P-E hysteresis had main parameters for BNT, remnant polarization (P_r = 27 μC/cm2), spontaneous polarization (P_s = 35 μC/cm²) and coercive electric field (E_c = 60 kV/cm) and for BKT the remnant polarization was (P_r = 5.2 μC/cm²), spontaneous polarization (P_s = 30 μC/cm²) and coercive electric field (E_c = 4.72 kV/cm). These three parameters (remnant polarization, spontaneous polarization, coercive electric field) were used in a simulated software depending on the mathematical model for the polarization in ferroelectric materials. The simulation software predicted the value of applied electric field required to perform the P-E hysteresis experiment varying with P_r, P_s, E_c. The results of the simulation exhibited agreement with the experimental data. The last prediction could help the researchers in studying the ferroelectric hysteresis loop, especially for those studying a fatigue behaviour or studying the effect of electric field cycle on the hysteresis loop.

Ferroelectric Behaviour, Fatigue Behaviour, Hysteresis Loop, Perovskite Structure

Mahmood, N. and Al-Shakarchi, E. (2017) Simulation and Experimental Data of P-E Hysteresis Loop in BNT and BKT. Journal of Modern Physics, 8, 844-851. doi: 10.4236/jmp.2017.85053.