Figure 6: Nature Communications

Fig. 6

From: Piezo-generated charge mapping revealed through direct piezoelectric force microscopy

Fig. 6

Piezogenerated charge of lead zirconate titanate (PZT) a, DPFM-SI and b, DPFM-SO of a PZT sample with natural domains, scale bar 2.5 μm. The force applied was increased at the middle of the scan, and then further decreased to see the current dependence upon the force applied. PZT was selected as it has a small surface charge density compared with BFO and PPLN but a higher d33 constant. c and d are corresponding current profiles extracted from a and b. The d33 constant, calculated by dividing the collected charge by the applied force is in agreement with values reported in the literature, and that the current recorded is larger compared with experiments performed on BFO and PPLN