Mapeamento de Campo Elétrico via Sensor Piezoelétrico: Modelagem Computacional Comparativa das Estruturas Perovskitas Pb(Zr,Ti)O3 e BaTiO3

Abstract

Piezoelectric materials have received considerable attention due to their wide application in various technologies, mainly because they present relevant electro- mechanical coupling properties. In this context, the objective of this work was the proposal and analysis of an electric field sensor, initially carried out through the- oretical modeling followed by computational simulation, using perovskite struc- ture materials: barium titanate (BaTiO3) and lead zirconate titanate (PZT). The first phase of this research was dedicated to understanding the piezoelectric phenome- non from a crystallographic point of view and how this description relates to the mathematical equations that characterize the phenomenon. The second phase fo- cused on sensor modeling via ANSYS software, conducting deformation tests of the materials when subjected to distinct continuous electric fields. The results in- dicated that the analyzed materials showed deformation proportional to their pie- zoelectric coefficients, in agreement with the inverse piezoelectric effect described in the literature. Finally, it was found that PZT presented approximately twice the sensitivity to deformation when compared to BaTiO3, evidencing its better perfor- mance for applications based on piezoelectric materials.