Abstract
Bismuth layered material stand out from other piezoelectric materials due to their high Curie temperature (Tc) and are often used in high temperature piezoelectric actuators and capacitors. However, its low piezoelectric coefficient (d33) and dielectric constants (ε′) limit the scope of application of this material. The Bi3Ti0.99 (Y0.5Sb0.5) 0.01NbO9 (BTN-1YSb) ceramics by solid state sintering method show improved d33 (8.1 pC/N), dielectric constants (ε′ ∼2051), temperature stability (d33＞8 pC/N at 800 °C) and mechanical quality factor (Qm ∼ 1834). After Rietveld refinement, it was found that the oxygen element contributed the most to the spontaneous polarization (Ps) enhancement of the piezoelectric material. In addition, three dielectric anomalous peaks are observed for the first time in BTNO-4YSb BTN-3YSb ceramics, which is due to the interaction of point defects with domain walls in a wide temperature range. This advantage can be maximized by tuning the dielectric anomaly peak to provide a more stable d33 at high temperatures. This study analyzes that the contribution of each ion to the piezoelectric properties of BTN-based ceramics and provides a good example for the study of dielectric peaks.
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 callDisclaimer: 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.
