*Member, The American Ceramic Society.
Structure and Piezoelectric Properties Near the Bismuth Scandium Oxide–Lead Zirconate–Lead Titanate Ternary Morphotropic Phase Boundary
Article first published online: 7 OCT 2010
© 2010 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 3, pages 788–795, March 2011
How to Cite
Sehirlioglu, A., Sayir, A., Dynys, F., Nittala, K. and Jones, J. (2011), Structure and Piezoelectric Properties Near the Bismuth Scandium Oxide–Lead Zirconate–Lead Titanate Ternary Morphotropic Phase Boundary. Journal of the American Ceramic Society, 94: 788–795. doi: 10.1111/j.1551-2916.2010.04142.x
C. A. Randall—contributing editor
This work was financially supported by the Air Force Office of Scientific Research Grant FA 9550-06-1-0260. Presented at 2009 U. S. Navy Workshop on Acoustic Transduction Materials and Devices, State College, PA, May 12–15, 2009 (Ceramics and Losses Session).
- Issue published online: 11 MAR 2011
- Article first published online: 7 OCT 2010
- Manuscript No. 27694. Received March 15, 2010; approved August 17, 2010.
Ternary phase diagram of BiScO3 (BS), PbZrO3 (PZ), and PbTiO3 (PT) was explored for identification of high-performance piezoelectrics for actuator applications. The ternary morphotropic phase boundary (MPB) connecting the binary MPBs of BS–PT (45/65) and PZ–PT (52/48) was determined using X-ray diffraction (XRD). High-temperature XRD and dielectric measurements were used to determine the phase transformation temperatures. Curie temperature (TC) had a near linear dependence on composition, rate of which is determined for each component of the ternary independently. Specimens on the tetragonal side of the MPB exhibited lower high field resistivity and proper poling was not possible. Specimens on the rhombohedral side were superior with saturated hysteresis loops and piezoelectric coefficient (d33)>400 pm/V. Unlike phase transformation temperatures, the proximity to MPB was more dominant than the compositional effects in determining electrical and electromechanical properties, which maximized for the compositions closest to the MPB. Both weak- and high field properties are reported as a function of temperature.