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3. Effect of (Zn1/3Nb2/3)4+ co-substitution on the microwave dielectric properties of Ce2Zr3(MoO4)9 ceramics

Author

Du Jialun, Ma Xiaomeng, Kimura Hideo, Wu Haitao, Zhou Xu, Lu Yizhong, Tian Huanrong, Yue Zhenxing, and Liu Lintao

Subjects
Lattice energy, Materials science, Process Chemistry and Technology, Doping, Analytical chemistry, Dielectric, Microstructure, Grain size, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Polarizability, Phase (matter), visual_art, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Ceramic
Abstract

Ce2[Zr1-x(Zn1/3Nb2/3)x]3(MoO4)9 (CZ1-x(ZN)xM) (x = 0.02–0.08) compounds were successfully prepared to scientifically examine the effect of (Zn1/3Nb2/3)4+ doping on phase composition, microstructures, and properties. The XRD results showed that all compounds formed a pure phase with the space group of R-3c. SEM results indicated that all compounds were compact at 675 °C, and the lattice parameters and average grain size decreased with doping. Performance analysis illustrated that er was closely related to the polarizability, and Q∙f was affected by the lattice energy of the Mo–O bond. The τf was maintained at an excellent level. Far-infrared analysis indicated that the major dielectric contribution to CZ1-x(ZN)xM ceramics was related to the absorption of phonon oscillation. The optimum properties (er = 10.72, Q∙f = 59,381 GHz, τf = −11.48 ppm/°C) were obtained when x = 0.04.

Published
2022

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