Effects of W6+ substitution on the microwave dielectric properties of Ce2Zr3(MoO4)9 ceramics

Low temperature sintered Ce 2 Zr 3 ( Mo 0 . 9 W 0 . 1 O 4 ) 9 (marked as CZMW) ceramics were synthesized via the conventional solid-state reaction method. X-ray diffraction results showed that the CZMW ceramics belonged to a Trigonal system with R-3C space group, and without any impure phase formation. The experimental facts revealed that the density and grain morphology greatly affected the microwave dielectric properties. The samples sintered at 825 ∘ C exhibited good microwave dielectric properties: ε r = 9 . 8 5 , Q × f = 2 2 , 9 8 0 GHz (at 11.3 GHz) and a satisfactory τ f ( − 1.5 ppm/ ∘ C) value. It is suggested that the CZMW ceramics are suitable for low-temperature co-fired ceramic (LTCC) applications in microwave devices.