(1-x)(PbMgNbO3-PbZrTiO3)-x(BaTiO3) Piezoelectric Ceramics

Abstract

The Pb(Mn1/3Nb2/3)O-3-Pb(Ti,Zr)O-3 system near the morphotropic phase boundary (MPB) can be expected to provide high piezoelectric constant and electromechanical coupling coefficient. Therefore it has used as an excellent candidate for piezoelectric applications including the high-power application. In this study, electric field-induced phase transition in PMN-PZT-based ceramics at a relatively low field of 40kV/cm will be discussed. The structural and electrical properties of (1-x)(PMN-PZT)-xBT ceramics were investigated as a function of the BaTiO3 content (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5). Phase formation behavior was studied by an X-ray diffraction method. Room temperature SEM investigation revealed common trends in the grain structure with increasing BaTiO3 content.