Microwave Dielectric Properties of Low-Temperature Sinterable BaCe_2(MoO_4)_4 Ceramics

摘要

Low-temperature sinterable BaCe_2(MoO_4)_4 ceramics were prepared through solid-state ceramic route. X-ray diffraction, laser Raman spectroscopy and scanning electron microscopy techniques have been used to investigate the structure and micro-structure of BaCe_2(MoO_4)_4 ceramics. The laser Raman study reveals distorted MoO_4~(2-) tetrahedral networks in the unit cell of the BaCe_2(MoO_4)_4 ceramics. The BaCe_2(MoO_4)_4 exhibits a dielectric constant of 12.3, an unloaded quality factor of 3320, and a temperature coefficient of resonant frequency of -37 ppm/℃.