Abstract
Zn1−x(Li0.5Bi0.5)xMoxW1−xO4 (x = 0–0.25) ceramics were prepared using the solid-state reaction process. The results show that the existence of the (Li0.5Bi0.5)MoO4 secondary phase significantly increases the τf value and improves the sintering behavior. When sintered at 755 °C, the sample with x = 0.05 exhibits the highest Q×f value (37,551 GHz), while the ceramics with x = 0.15 and 0.20 display excellent τf values, − 6.569 and − 3.097 ppm/°C, respectively. Additionally, X-ray diffraction refinement, Raman and infrared spectroscopy, and the complex bond valence theory were used to investigate the relationship between the phase, structure, and vibration characteristics and the microwave dielectric properties. Good microwave dielectric properties were obtained for the Zn0.85(Li0.5Bi0.5)0.15Mo0.15W0.85O4 ceramic sintered at 755 °C: εr = 18.937, Q×f = 20,022 GHz, and τf = −6.569 ppm/°C, which provides a promising candidate for low temperature co-fired ceramic technology.
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