Abstract
(1 − x)K0.5Na0.5NbO3–xBi(Li1/3Ti2/3)O3 [(1 − x)KNN–xBLT, x = 0, 0.005, 0.01, 0.015, 0.02] ceramics were prepared via a solid-state reaction method. The sintering behavior, phase structure, dielectric properties, piezoelectric performances and conductive behavior of ceramics were investigated. The BLT additive could effectively improve the performances of KNN ceramics. When x = 0.01, piezoelectric constants d33 of 145 pC/N, relative permittivity er of ~ 1551, temperature stability (Δe/e110 °C) of ± 9% (110–330 °C), dielectric loss tanδ ≤ 0.036 (101.5–388 °C) were obtained. The values of activation energy E rel and electrical conductivity activation energy E con changed from 1.1572 to 1.5918 eV and 0.8959 to 1.1088 eV, respectively. Furthermore, a possible mechanism of high temperature dielectric relaxation and conductivity could be attributed to the oxygen vacancy defect of secondary ionization.
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.
