Abstract
Ba4Nd9.33Ti18O54·xwt%Al2O3 (BNT-A) ceramics (x=0, 0.5, 1.0, 1.5, 2.0, 2.5) were prepared by the conventional solid state reaction. The effects of Al2O3 on the microstructure and microwave dielectric properties of Ba4Nd9.33Ti18O54 (BNT) ceramics were investigated. X-ray diffraction and backscatter electronic images showed that the Al2O3 additive gave rise to a second phase BaAl2Ti5O14 (BAT). The formation mechanism and grain growth of the BAT phase were first discussed. Dielectric property test revealed that the Al2O3 additive had improved the dielectric properties of the BNT ceramics: increased the Q×f value from 8270 to 12,180GHz and decreased the τf value from 53.4 to 11.2ppm/°C. A BNT-A ceramic with excellent dielectric properties: εr=70.2, Q×f=12,180GHz, τf=20ppm/°C was obtained with 2.0wt% Al2O3 added after sintering at 1320°C for 4h.
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.
