Effects of ZnO on the piezoelectric properties of Pb(Mn sub(1/3)Sb sub(2/3))O sub(3)-Pb(Zr,Ti)O sub(3) ceramics

• Published in: Journal of electroceramics 2007-04, Vol.18 (1-2), p.73-75
• Main Authors: Yoon, M-S, Kim, Y-M, Kweon, S-Y, Hong, T-W, Lee, Y-G, Ryu, S-L, Kim, I-H, Kim, H-J, Ur, S-C
• Format: Article
• Language: English
• Subjects: Ceramics; Density; Dielectric constant; Mathematical analysis; Piezoelectricity; Pyrochlores; Voltage; Zinc oxide
• ISSN: 1385-3449; 1573-8663
• DOI: 10.1007/s10832-007-9010-0

Perovskite-type 0.05 Pb(Mn sub(1/3)Sb sub(2/3))O sub(3)-0.95 Pb(Zr sub(0.5)Ti sub(0.5))O sub(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 00.5 mol% ZnO addition. The highest density of 7.92 g/cm super(3) was obtained when sintered at 1200 degree C for 2 hrs. Piezoelectric properties as a function of ZnO content were evaluated using a gain phase analyzer. Piezoelectric charge constant (d sub(31)) and piezoelectric voltage output coefficient (g sub(31)) increased up to -130 pC/N and -24.910 super(3)Vm/N, respectively, with increasing ZnO content. Mechanical quality factor (Q sub(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 sub(p)) and relative dielectric constant ( epsilon 33 T mathord / vphantom epsilon 33 T epsilon 0 kern - nulldelimiterspace epsilon 0 ) reached to the maximum of 56% and 1,727, respectively.