Effects of ZnO on the piezoelectric properties of Pb(Mn1/3Sb2/3)O3-Pb(Zr,Ti)O3 ceramics |
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| Authors: | M.-S. Yoon Y.-M. Kim S.-Y. Kweon T.-W. Hong Y.-G. Lee S.-L. Ryu I.-H. Kim H.-J. Kim S.-C. Ur |
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| Affiliation: | (1) Department of Materials Science and Engineering, Research Center for Sustainable Eco-Materials (ReSEM), Chungju National University, Chungbuk, 380-702, South Korea;(2) Department of Materials Department, Corea Electronics Corporation (CEC), Chungbuk, 380-250, South Korea;(3) Division of General Education, Chungju National University, Chungbuk, 380-702, South Korea |
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| Abstract: | Perovskite-type 0.05 Pb(Mn1/3Sb2/3)O3-0.95 Pb(Zr0.5Ti0.5)O3 (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/cm3 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 (d31) and piezoelectric voltage output coefficient (g31) increased up to −130 pC/N and −24.9 × 103Vm/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 ( ) reached to the maximum of 56% and 1,727, respectively. |
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| Keywords: | PMS-PZT Piezoelectric ZnO doping |
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