Abstract
Large piezoelectricity (d33) and high Curie temeprature (TC) are highly expected to attain in alkaline niobate-based piezoceramics, which is of high significance in the practical applications. For the compositionally optimized composition, we achieved both large d33 (~ 395 pC/N) and high TC (~ 342 °C) in (0.995-x)K0.485Na0.485Li0.03NbO3–xBi0.5(Na0.8K0.2)0.5ZrO3–0.005BiScO3 (0 ≤ x ≤ 0.06) (KNNL–xBNKZ–BS) lead-free ceramics through the construction of rhombohedral–orthorhombic–tetragonal (R–O–T) phase boundary. A systematic study of the effect of phase boundary on resulting piezoelectric, ferroelectric, and strain properties in the ceramics was investigated. The KNNL–xBNKZ–BS ceramics with x = 0.04 exhibited an enhanced unipolar strain properties (strain ~ 0.161%, d33*~402 pm/V) and thermal stability of d33 (Ta ≤310 °C, normalized d33 ≥ 84.6%), which was mainly ascribed to the R–O–T phase boundary and high TC respectively. Therefore, a balanced development of the parameters (e.g., d33, TC) can be well realized in KNNL–xBNKZ–BS ceramics, we believe that such a material system opens a window for the practical applications.
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.
