Abstract
The sintering temperature of 0.95(Na0.5K0.5)NbO 3-0.05BaTiO3 (NKN-BT) ceramics needs to be decreased below 1000°C to prevent Na2O evaporation, which can cause difficulties in poling and may eventually degrade their piezoelectric properties. NKN-BT ceramics containing CuO were well sintered at 950°C with grain growth. Poling was easy for all specimens. Densification and grain growth were explained by the formation of a liquid phase. The addition of CuO improved the piezoelectric properties by increasing the grain size and density. High piezoelectric properties of d33=230 pC/N, kp=37%, and ε3T/ε0=1150 were obtained from the specimen containing 1.0 mol% of CuO synthesized by the conventional solid-state method.
Original language | English |
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Pages (from-to) | 4066-4069 |
Number of pages | 4 |
Journal | Journal of the American Ceramic Society |
Volume | 90 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2007 Dec |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry