Member, American Ceramic Society.
Electromechanical Properties of Pb(Yb1/2Nb1/2)O3-PbZrO3-PbTiO3 Ceramics
Article first published online: 20 DEC 2004
Journal of the American Ceramic Society
Volume 85, Issue 11, pages 2753–2758, November 2002
How to Cite
Yoon, K. H., Lee, H. K. and Lee, H. R. (2002), Electromechanical Properties of Pb(Yb1/2Nb1/2)O3-PbZrO3-PbTiO3 Ceramics. Journal of the American Ceramic Society, 85: 2753–2758. doi: 10.1111/j.1151-2916.2002.tb00524.x
S. E. Trolier-McKinstry—contributing editor
Supported by the Korea Research Foundation under Grant No. KRF-2000-042-E00108.
- Issue published online: 20 DEC 2004
- Article first published online: 20 DEC 2004
- Manuscript No. 187639. Received June 18, 2001; approved August 12, 2002.
- electromechanical properties;
- lead zirconate;
- lead titanate
The electromechanical and electric-field-induced strain properties of xPb(Yb1/2Nb1/2)O3·yPbZrO3·(1−x−y)PbTiO3 (x= 0.12, 0.25, 0.37; y= 0.10–0.40) ceramics have been studied systematically as a function of Pb(Yb1/2Nb1/2)O3 (PYN) content and PbZrO3/PbTiO3 (PZ/PT) ratio. In addition, the effect of MnO2 on the electromechanical properties of 0.12Pb(Yb1/2Nb1/2)O3·0.40PbZrO3·0.48PbTiO3 was also investigated. The maximum transverse strain values of 1.6 × 10−3 for x= 0.12, 1.45 × 10−3 for x= 0.25, and 1.36 × 10−3 for x= 0.37 were obtained at the compositions which were regarded as the morphotropic phase boundary (MPB). The transverse strain was maximized at the MPB composition. The value of the maximum electromechanical coupling coefficient was 0.69 for y= 0.40 and x= 0.12 composition. In the 0.12Pb(Yb1/2Nb1/2)O3·0.40PbZrO3·0.48PbTiO3 composition, the temperature of the maximum dielectric constant decreased and the grain size increased with an addition of MnO2. The electromechanical coupling coefficient decreased while the mechanical quality factor rapidly increased with an addition of MnO2. These resulted mainly from the acceptor effect of manganese ions that were produced by doping MnO2 into the perovskite structure.