Effects of W^(6+) substitution on the microwave dielectric properties of Ce_(2)Zr_(3)(MoO_(4))_(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℃ exhibited good microwave dielectric properties.ε_(r)=9.85,Q×f=22,980 GHz(at 11.3 GHz)and a satisfactoryT_(f)(-1.5 ppm/℃)value.It is suggested that the CZMW ceramics are suitable for low-temperature co-fired ceramic(LTCC)applications in microwave devices.