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

Abstract

The Pb(Mn_1/3Nb_2/3)O₃-Pb(Ti,Zr)O₃ 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 40 kV/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.

Keywords:

• PMN-PZT
• BaTiO₃
• piezoelectric properties

Acknowledgment

This work was supported by the Basic Research Foundation of Defense Acquisition Program Administration and Agency for Defense Development (Grant Number: UD 120048GD).