Significance of Micro and Nano PZT Particles on Dielectric and Piezoelectric Properties of PZT-PVDF Composites

Gowdhaman P,Haresh M Pandya,Annamalai V,Kumar P R

doi:10.7439/ijasr.v2i3.3099

Abstract

PZT-PVDF composites were prepared using different particle size of PZT and a hot press apparatus has been used for making samples. The structural and compositional analysis of the composite sample was done by using Scanning Electron Microscope (SEM) and Energy Dispersive Analysis of X-rays (EDAX) respectively. The grain size of the ball milled PZT powder was analyzed using powder X-Ray Diffraction (XRD). The samples were poled at a fixed temperature for about an hour under different poling fields. The dielectric constant (?r) and the piezoelectric properties like piezoelectric strain coefficient (d33) and voltage coefficient (g33) of composite have been analyzed.

Highlights

Ferroelectric materials have recently become so popular due to its spontaneous polarization behavior [1]
The Scanning Electron Microscope (SEM) micrograph obtained for the PZTPVDF composite made of different particle size of the PZT is shown in figure 1 (a-d)
It can be noted that the size of the PZT particle dominating the polymer matrix with the increase in PZT particle size in the composite due to the increase in grain size of individual PZT particles

Summary

Introduction

Ferroelectric materials have recently become so popular due to its spontaneous polarization behavior [1]. In 0-3 connectivity the volume fraction of PZT can be altered, but for the present study it has been chosen as 0.5 whereas the composites were prepared using different particle size of PZT particles. The dielectric and piezoelectric properties of the composites with different particle size of PZT have been examined to optimize the particle size of PZT.

Results

Conclusion