Li2(Mg1-xZnx)3SnO5F2 (x=0.00-0.08): A novel low-temperature sintered microwave dielectric ceramics with low loss

Through solid-state reaction method, a novel oxy-fluoride Li-2(Mg1-xZnx)(3)SnO5F2 (LMZSOF, x = 0.00 - 0.08) ceramic with low-temperature sintering were acquired. Based on the detection methods, X-ray diffraction and scanning electron microscopy, the polyphase structure and surface morphology of ceramics were tested, the LMZSOF ceramics are a multiphase structure with dense microstructure. LMZSOF ceramics possess a low temperature for sintering densification. The dielectric constants of ceramics were predominantly influenced by the second phase and density. While the Zn-addition amount increases from 0.00 to 0.06, the quality factor appears a trend of increasing first and then decreasing, reaching its maximum value at x = 0.04. The resonant frequency temperature coefficient fluctuated around similar to -65 ppm/degrees C. Li-2(Mg0.96Zn0.04)(3)SnO5F2 ceramics with superb microwave dielectric properties were obtained at 950 degrees C, where epsilon(r) is 9.19, Q x f is 82,783 GHz, tau(f) is -65.6 ppm/degrees C.