J. L. Jones—contributing editor
Low-Temperature Sintering and Piezoelectric Properties of 0.65Pb(Zr1−xTix)O3–0.35Pb(Ni0.33Nb0.67)O3 Ceramics
Article first published online: 12 MAY 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 10, pages 3442–3448, October 2011
How to Cite
Nam, C.-h., Park, H.-Y., Seo, I.-T., Choi, J.-H., Joung, M.-R., Nahm, S., Lee, H.-J., Kim, Y.-H. and Sung, T. H. (2011), Low-Temperature Sintering and Piezoelectric Properties of 0.65Pb(Zr1−xTix)O3–0.35Pb(Ni0.33Nb0.67)O3 Ceramics. Journal of the American Ceramic Society, 94: 3442–3448. doi: 10.1111/j.1551-2916.2011.04538.x
- Issue published online: 4 OCT 2011
- Article first published online: 12 MAY 2011
- Manuscript No. 28560. Received September 5, 2010; approved March 1, 2011.
0.65Pb(Zr1−xTix)O3–0.35Pb(Ni0.33Nb0.67)O3 (0.65PZTx–0.35PNN) ceramics exhibited a morphotropic phase boundary at approximately x=0.58–0.59. The 0.65PZT58–0.35PNN ceramics sintered at 1200°C exhibited the high piezoelectric properties of d33=605pC/N, kp=0.61, and ɛ3T/ɛ0=3600. The sintering temperature of the PZT58–PNN ceramics decreased from 1200 to 850°C with the addition of a small amount of CuO. The CuO reacted with the PbO and formed a liquid phase during sintering, which assisted in the densification of the specimens. Most of the Cu2+ ions existed in the CuO second phase, thereby preventing any possible hardening effect due to the Cu2+ ions. The Curie temperature of the 0.65PZT58–0.35PNN ceramic was approximately 200°C and was not altered by the addition of CuO. The d33, kp, and ɛ3T/ɛ0 values of the 0.65PZT58–0.35PNN ceramics were considerably increased with the addition of CuO and similar results were also observed for the 0.65PZT59–0.35PNN ceramics. In particular, 1.0 mol% CuO-added 0.65PZT58–0.35PNN ceramics sintered at 900°C exhibited the high piezoelectric properties of d33=620 pC/N, kp=0.64, and ɛ3T/ɛ0=3750. Moreover, the reaction between the Ag electrode and the Cu-added 0.65PZT58–0.35PNN ceramic sintered at 900°C was negligible.