LAUSR

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.