Abstract Microwave dielectric ceramics of Ln2MoO6(Ln = La and Y) were fabricated via a conventional solid-state reaction route. XRD, Rietveld refinement, SEM and vector network analysis were applied to analyse the crystal structural, microstructural and dielectric properties of the ceramics. The Y2MoO6 ceramic was crystallized in a monoclinic crystal structure, whereas the La2MoO6 ceramic could form a pure tetragonal structure. All components can be sintered at 1200–1500 °C with a relative permittivity of 14.1–17.1 and a high quality factor. The La2MoO6 ceramic exhibits satisfactory dielectric performance with Q × f = 67,090 GHz, er = 16.6 and τf = −50.1 ppm/°C, while Q × f = 27,760 GHz, er = 14.6, and τf = −37.4 ppm/°C for Y2MoO6; hence, these ceramics could be candidates for 5G technology.

中文翻译：

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Ln2MoO6（Ln=La和Y）陶瓷的相结构、烧结行为和微波介电性能

摘要 通过常规固相反应途径制备了Ln2MoO6(Ln=La和Y)微波介电陶瓷。XRD、Rietveld 精修、SEM 和矢量网络分析被应用于分析陶瓷的晶体结构、显微结构和介电性能。Y2MoO6 陶瓷结晶为单斜晶结构，而 La2MoO6 陶瓷可形成纯四方晶结构。所有组件都可以在 1200–1500 °C 下烧结，相对介电常数为 14.1–17.1，品质因数很高。La2MoO6 陶瓷表现出令人满意的介电性能，Q × f = 67,090 GHz，er = 16.6 和 τf = -50.1 ppm/°C，而 Q × f = 27,760 GHz，er = 14.6 和 τf = -37.4 ppm/°C，对于Y2MoO6; 因此，这些陶瓷可能成为 5G 技术的候选材料。