Abstract
The CaMoO4–xY2O3–xLi2O ceramics were prepared by the solid‐state reaction method. The sintering behavior, phase evolution, microstructure, and microwave dielectric properties were investigated. CaMoO4 solid solution was obtained when x = 0.030, and two‐phase system including tetragonal CaMoO4 phase and cubic Y2O3 phase formed when 0.066 ≤ x ≤ 1.417. A temperature stable CaMoO4‐based microwave dielectric ceramic with ultralow sintering temperature (775°C) was obtained in the CaMoO4–xY2O3–xLi2O system when x = 0.306, which showed good microwave dielectric properties with a low permittivity of 9.5, a high Qf value of 63 240 GHz, and a near‐zero temperature coefficient of resonant frequency of +7.2 ppm/°C.
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