Abstract
1 mol% Nb-doped Pb[(Sc1/2Nb1/2)0.58Ti0.42]O3 (PSNTN) ceramics with the morphotropic phase boundary (MPB) composition were prepared by the hot isostatic pressing (HIP) method to improve their physical and ferroelectric properties. Sintering, hot isostatic pressing, and annealing conditions were optimized to produce high-density PSNTN ceramics and utilize their excellent dielectric and piezoelectric properties. Using hot isostatic pressing after conventional sintering at 1275° C for 2 h, the achieved density of PSNTN hot-isostatically pressed at 1000° C was 8.00 g/cm3, which was approximately 99.5% of the theoretical value. The maximum dielectric constant of ε T33/ε0 was 2900 at room temperature, and its dissipation factor was 1.5%. Large electromechanical coupling factors of k p=70% and k t=55% were obtained. The remanent polarization P r and coercive field E c were 27 µ C/cm2 and 6.9 kV/cm, respectively. The PSNTN ceramic is a promising material for applications to electromechanical bulk transducers, because of its large coupling, high dielectric constant and low mechanical quality factor.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.