Abstract
The phase composition, microstructures, sintering behavior, and microwave dielectric properties of (1 − x)ZnNb2O6–xBa(Zn1/3Nb2/3)O3 (x = 0.25, 0.30, 0.35, 0.40) ceramics prepared via conventional solid-state route were systematically investigated as a function of x value and sintering temperature. The ixiolite ZnNb2O6, perovskite Ba(Zn1/3Nb2/3)O3, and a minor phase of Ba3Zn1/3Nb14/3O15 were obtained throughout the studied compositional range. The variation of bulk density and dielectric properties are related to the x value. With increasing molar fraction of Ba(Zn1/3Nb2/3)O3, the temperature coefficient of resonant frequency (τ f ) value decreased, and a near-zero τ f value could be obtained for the samples with x = 0.30. The optimum microwave dielectric properties with an e r value of 31.22, a Q × f value of 39,611 GHz (at 5.5 GHz), and a τ f value of − 2.28 ppm/°C were obtained for 0.7ZnNb2O6–0.3Ba(Zn1/3Nb2/3)O3 ceramics sintered at 1200 °C for 4 h, which showed dense microstructures as well as well-developed grain growth.
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.
