During P-E loop measurement of all of my samples (PVDF film, BFO Pellets) we found discontinuity in the curve (files attached). Can anyone suggest any cause behind it??
In my guess, you used single loop(input electric field) for measurement.
Initial state, dipoles are randomly oriented. That is why P~0 at Electric field =0.
Try more than 2 loop for measuring hysteresis loop.
(First one is just for pre-polarization)
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