Effects of ZnO on the piezoelectric properties of Pb(Mn1/3Sb2/3)O3-Pb(Zr,Ti)O3 ceramics

Abstract

Perovskite-type 0.05 Pb(Mn 1/3 Sb 2/3 )O 3 -0.95 Pb (Zr 0.5 Ti 0.5 )O 3 (PMS-PZT) was synthesized by conventional bulk ceramic processing technique. ZnO as a dopant up to 0.5 mol% was incorporated into the PMS-PZT system, and the effects on piezoelectric properties were investigated. Pyrochlore phase was not detected to form during the synthesis of the PMS-PZT system with 0∼0.5 mol% ZnO addition. The highest density of 7.92 g/cm 3 was obtained when sintered at 1200°C for 2 hrs. Piezoelectric properties as a function of ZnO content were evaluated using a gain phase analyzer. Piezoelectric charge constant (d 31 ) and piezoelectric voltage output coefficient (g 31 ) increased up to −130 pC/N and −24.9×10 3 Vm/N, respectively, with increasing ZnO content. Mechanical quality factor (Q m ) was shown to reduce considerably with increasing ZnO content. When 0.3 mol% of ZnO was added into the system, electromechanical coupling factor (k p ) and relative dielectric constant (( T 33 ( 0 ) reached to the maximum of 56% and 1,727, respectively.

Electrical properties and temperature behavior of ZnO-doped PZT–PMnN modified piezoelectric ceramics and their applications on therapeutic transducers

“…Ahn et al showed that ZnO was effective in improving the piezoelectric properties [15]. Yoon et al showed that ZnO could enhance the piezoelectric voltage output coefficient (g 33 ) and piezoelectric charge constant (d 33 ) [16], Wang et al reported that the ZnO nanowhisker could greatly improve the piezoelectric properties, mechanical strength and aging rate of PZT ceramics [17], and Zhao found the similar results from nano ZnO doping into the PZT thick-film by a hybrid sol-gel route [18]. Wongmaneerung et al also showed that the suitable addition of ZnO nanowhiskers into PT ceramics could enhance the densification, mechanical and dielectric properties [19].…”

Enhanced Dielectric and Ferroelectric Properties of Pb(Mg1/3Nb2/3)0.65Ti0.35O3 Ceramics by ZnO Modification

“…ZnO has been widely used as a sintering aid for dielectric and piezoelectric ceramics . As demonstrated previously, the addition of ZnO could promote the formation of a liquid phase which expedited mass transfer during a sintering process, resulting in an enhancement of density, grain size as well as electrical properties of ceramics .…”