Affiliation of Author(s):材料科学与技术学院
Journal:Kuei Suan Jen Hsueh Pao
Abstract:Composite ceramics of (1-x)Li1.0125MgPO4-xBa3(VO4)2 were prepared by a conventional solid-state route. The effect of Ba3(VO4)2 doping on the phase composition, sinterability, microstructure and microwave dielectric properties of Li1.0125MgPO4 ceramics was investigated. The results show that (1-x)Li1.0125MgPO4-xBa3(VO4)2 ceramics consist of Li1.0125MgPO4 and Ba3(VO4)2 phases. The addition of Ba3(VO4)2 can reduce the sintering temperature of Li1.0125MgPO4 ceramics. The relative dielectric constant Εr of composite ceramics incerases gradually, quality factor Q×f decreases, and the temperature coefficient of resonant frequency τf varies from negative to positive when Ba3(VO4)2 content increases. In addition, a near-zero τf value is obtained via the adjustment of the value of x. The 0.5Li1.0125MgPO4-0.5Ba3(VO4)2 composite ceramic sintered at 875℃ for 2h has excellent microwave dielectric properties (i.e., Εr=9.72, Q×f=57347GHz, and τf=-1.9×10-6 /℃), which can be used as a promising low temperature co-firing dielectric material. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
ISSN No.:0454-5648
Translation or Not:no
Date of Publication:2019-03-01
Co-author:张梦迪
Correspondence Author:zy
Date of Publication:2019-03-01