Microstructural Effects on the Electromechanical Properties of PZT-BFCeramics
In this study microstructure↔property relationships were explored for piezoelectric ceramics with a composition of 0.97[(Pb0.95Sr0.05) (Zr0.514Ti0.484)O3] - 0.03BiFeO3. Very minor changes in the sintering temperature (1290 - 1310°C) or soak time (1.5 - 3.5 h) resulted in large differences in the electromechanical properties. Specifically, higher sintering temperatures resulted in no residual grain boundary phases, but larger grain sizes and/or variations in the defect structure resulted in lower permittivities, piezoelectric coefficients, and lower mechanical Q's. The sintering time exhibited an optimal value; too short or too long resulted in poor performance. This study points clearly illustrates the difficulty in performing systematic compositional studies when the role of the microstructure can be dominant.
W. Huebner et al., "Microstructural Effects on the Electromechanical Properties of PZT-BFCeramics," Proceedings of the 9th IEEE International Symposium on Applications of Ferroelectrics (1994, University Park, PA), pp. 150-153, Institute of Electrical and Electronics Engineers Inc. (IEEE), Aug 1994.
The definitive version is available at http://dx.doi.org/10.1109/ISAF.1994.522322
9th IEEE International Symposium on Applications of Ferroelectrics (1994: Aug. 7-10, University Park, PA)
Materials Science and Engineering
Keywords and Phrases
Bismuth compounds; Ceramic materials; Composition; Defects; Grain size and shape; Lead compounds; Microstructure; Oxides; Permittivity; Piezoelectricity; Sintering; Thermal effects; Electromechanical properties; Lead zirconate titanate - bismuth ferrous trioxide ceramics; Morphotropic phase boundary; Optimal sintering time
International Standard Book Number (ISBN)
Article - Conference proceedings
© 1994 Institute of Electrical and Electronics Engineers Inc. (IEEE), All rights reserved.