The sintering behavior of 0.36BiScO3-0.64PbTiO3 (0.36BS-0.64 PT) ceramics was studied to investigate the effect of grain growth by the sillenite Bi12PbO19 (BP) phase on their piezoelectric properties for application in high-temperature piezoelectric devices. The BP phase formed during calcination at temperatures <750 °C led to a grain growth anomaly of the 0.36BS-0.64 PT ceramics sintered at 1000 °C. This phase assisted the grain growth of the 0.36BS-0.64 PT ceramics by liquid phase sintering. In particular, the 0.36BS-0.64 PT ceramic calcined at 700 °C exhibited excellent piezoelectric properties with a d33 of 531 pC/N, g33 of 41×10−3 Vm/N, kp of 61.8%, and Qm of 16. In addition, the 0.36BS-0.64 PT ceramics exhibited ferroelectric relaxor-like characteristics with an extremely large relaxation coefficient (γ) of 1.94 along with high maximum dielectric permittivity temperature (426 °C).
|Number of pages||9|
|Publication status||Published - 2021 Dec 15|
Bibliographical noteFunding Information:
This research was supported by the National R&D Program through the National Research Foundation of Korea ( NRF ) funded by the Ministry of Science and ICT ( 2020M3H4A3105597 ).
© 2021 Elsevier Ltd and Techna Group S.r.l.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry