Semiconductive lead zirconate titanate thin films grown by pulsed laser deposition

This is the authors' abstract. We don't add key points for this paper.

Heterostructures consisting of PbZr 0.2 Ti 0.8 O 3 epitaxial films on a SrTiO 3 (100) substrate with a La 0.67 Sr 0.33 MnO 3 bottom electrode were prepared by pulsed laser deposition. Plane-parallel capacitor structures were investigated by dielectric spectroscopy and piezoelectric measurement. Shift in a piezoelectric loop indicates that a sample has a small imprinted internal field, directed towards the copper top electrode. Temperature-dependent measurements in a range of 300–500 K were performed to obtain information on the frequency-depending response of the metal–ferroelectric–metal (MFM) structure and to analyze the effect of charge injection through the two Schottky-like contacts. The charge injection process greatly increases the conductivity in the low-frequency region.