Abstract
The chemical doping and sintering atmosphere have great influence on the defect structure and piezoelectric properties of (Na,K)NbO3 (NKN)-based ceramics. In this work, p/n-type NKN-based ceramics are designed by introducing different CuO doping contents. The defect configuration is analyzed by Rietveld refinement, Hall-effect measurement and impedance spectroscopy. The undoped and 3 mol% CuO-doped ceramics exhibit an n-type conduction mechanism. When n-type ceramics are sintered in air, the electron concentration will decrease, resulting in the better piezoelectric and dielectric properties than that sintered in N2. Nevertheless, 1 mol% CuO-doped ceramics exhibit a p-type conduction mechanism. The generation of holes can be suppressed when p-type ceramics are sintered in N2, which is beneficial to improve their piezoelectric and dielectric properties. The experimental results suggest that the p/n-type behavior can be judged by defect analysis and the optimal sintering atmosphere of NKN-based ceramics can be predicted by analyzing the charge carrier behavior of p/n-type ceramics.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Materials Science: Materials in Electronics
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.
