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Ferroelectric properties of flexible PZT composite films
Date Issued
01-11-2020
Author(s)
Arul, K. Thanigai
Rao, M. S.Ramachandra
Abstract
Lead zirconate titanate {[Pb(Zrx, Ti1-x)O3], PZT)} (x = 0.40), synthesized by solid state route, is embedded in the polymer matrix (PMMA) (Poly(methylmethacrylate)) using solvent evaporation technique. Polymer based composite films are prepared by different weight percentage (0.1 wt%, to 2.0 wt%) of the PZT particles. X-ray diffraction (XRD) confirmed that the polymer induced a decrease in the average crystallite size (61 ± 2 nm). Raman spectra of the higher PZT concentration (2.0 wt%) in the matrix revealed the presence of tensile strain in the polymer. The morphology of the PZT particles is found as cubic and the particle size in the range 0.3 μm–4.5 μm. On poling for 1 h, remnant polarization (Pr) (1.33 μC/cm2) of the composite film (2 wt%) is found to exhibit a low leakage current density of 8.12 × 10−10 A/cm2 at 5 kV/cm. The realized properties enable the composites to be employed as potential candidates in sensors, actuators and in energy harvesting applications as well.
Volume
146