Extended Data Fig. 8: Ferroelectric characterization of the 200 nm-thick NNO films.
From: Ultrahigh electromechanical response from competing ferroic orders

(a-c) P-E loops of (a) 125–500 kV/cm, (b) 625–1125 kV/cm, (c) 1250–1750 kV/cm, and (d-f) corresponding switching current curves: (d) 125–500 kV/cm, (e) 625–1125 kV/cm, (f) 1250–1750 kV/cm.