Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7897743 | Journal of the European Ceramic Society | 2018 | 5 Pages |
Abstract
A new series of Li3Ba2La3(1-x)Y3x(MoO4)8 microwave dielectric ceramics were prepared by a conventional solid-state reaction method. The Rietveld refinement results further confirm that Li3Ba2La3(1-x)Y3x(MoO4)8 belongs to a monoclinic system with space group C2/c. Scanning electron microscopy results reveal that Li3Ba2La3(1-x)Y3x(MoO4)8 ceramics can be well sintered at a low sintering temperature. In addition, the permittivity (εr) of Li3Ba2La3(1-x)Y3x(MoO4)8 ceramics was found to decrease gradually with increasing substitution content of Y3+, while the quality factor (Qxf) and temperature coefficient of resonant frequency (Ïf) increase with x monotonously. The xâ¯=â¯0.4 ceramic sintered at 700â¯Â°C for 4â¯h possesses optimum microwave dielectric properties of εr â¼ 14.4, Qxf â¼ 14,994â¯GHz (at 9.0â¯GHz) and Ïf â¼â¯+â¯6.9â¯ppm/°C. Particularly, no chemical reaction between the matrix phase and Ag metal suggests that the Li3Ba2La1.8Y1.2(MoO4)8 ceramic might be a promising candidate for low-temperature co-fired ceramic applications.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ruzhong Zuo, Yudong Xu, Min Shi, Weiqiong Li, Liangguo He,