A Microstructure, Piezoelectric and Dielectric Properties of the PZT Ceramics Obtained by the Sol-Gel Method

A technological process to obtain ceramic materials by the sol-gel method replaces gradually
conventional methods, based on a simple oxide synthesis as a result of high temperature
sintering. The materials obtained by the sol-gel method are characterized by high density and
better chemical purity. A powder with the Pb(Zr0:52Ti0:48)O3 chemical composition was obtained
as a result of a synthesis by the sol-gel method and it was formed and sintered by a hot
pressing method (HP). The specimens obtained were subjected to examinations of the dielectric
properties, the tangent of dielectric loss angle, the piezoelectric properties and their
micro-photographs were taken (SEM).
A course of the technological process by the sol-gel method was described, the dielectric
and piezoelectric parameters were determined and a microstructure and a domain structure
were examined in the work.