Effect of Milling Time on the Properties of BYF Doped PZT Energy Harvesting Ceramics by High-Energy Ball Milling

Abstract

Recently, Lead Zirconate Titanate (PZT) has been attracted for energy harvesting (EH) devices because of their excellent piezoelectric properties at the morphotropic phase boundary (MPB). The EH devices require high energy density related to high figure of merit (FOM: g33 x d33). As a result, the improvement of piezoelectric voltage coefficient (g33) and piezoelectric charge coefficient (d33) to better energy density property obtained should be searching for. Therefore, PZT-BYF system was chosen for piezoelectric energy harvester by focusing to study on the composition of 0.99PZT-0.01BYF (0.99Pb(Zr0.53Ti0.47)O3-0.01Bi(Y0.7Fe0.3)O3). In this study, PZT and BYF systems were calcined separately and then 0.99PZT-0.01BYF powders were prepared by solid state method and mixed via high-energy ball milling in various milling time (2, 4, 10 and 16 hrs). The effect of milling time on the physical and electrical properties, figure of merit and microstructure were investigated.