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. 2017 Oct 10;7:12915. doi: 10.1038/s41598-017-13425-w

Figure 4.

Figure 4

(a) Unipolar piezoelectric displacement (DE) and strain versus E-field (SE) loops for 5-µm-thick PZT film. E–field dependence of (b) normalized d33 at E max, (c) fraction of the unipolar strain at E max/2 (ΔS Emax/2) and strain at E max (S max), and (d) strain hysteresis (H).