We report comparative measurements of the piezoelectric coefficient d33 of a lead zirconate titanate (PZT) film by piezoresponse force microscopy based on tip/PZT/electrode and tip/electrode/PZT/electrode configurations. With the use of electrically characterized Au-coated tips, the obtained values are in good agreement and indicate a negligible methodological effect. It is concluded that the d33 can be reasonably determined without the use of a top electrode as long as the electrical quality of the tip is qualified.

Topics
Piezoelectricity, PZT, Piezoresponse force spectroscopy
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