Eu and Yb substituent effects on the properties of Pb(Zr0.52Ti0.48)O-3-Pb(Mn1/3Sb2/3)O-3 ceramics: Development of a new high-power piezoelectric withenhanced vibrational velocity

Improved piezoelectric materials with higher vibrational velocities are nee ded to meet the demands of advanced high power electromechanical applicatio ns. In this paper, the effects of Eu and Yb substituents on the vibrational velocity and the piezoelectric properties of Pb(Zr, Ti)O-3-Pb(Mn, Sh)O-3 c eramics will he reported. Both of these substituents resulted in a signific ant increase in the mechanical quality factor Q(m), a decrease in the diele ctric constant, and improvements in the electromechanical properties. Root mean square value (rms value) of vibration velocity as high as 1.0 m/s unde r an electric field of 10 kV/m (rms value) has been found for Yb-substitute d specimens, which is 1.7 times higher than that of Pb(Zr, Ti)O-3-Pb(Mn, Sb )O-3 ceramics and 3 times higher than that of the commercialized hard Pb(Zr , Ti)O-3 ceramics.