Abstract
Ba2MgWO6 (BMW) microwave dielectric ceramic was prepared by the traditional solid-state sintering. According to the XRD pattern, the sample belongs to a double perovskite structure (Fm-3m). The SEM image shows that the ceramic is dense with high crystallinity, whose average particle size is of 3.22 μm. The lattice vibrational characteristics of BMW ceramic were identified and analyzed through Raman and FTIR spectroscopy, whose vibrational modes were determined. The intrinsic properties (εr = 16.281, tanδ = 1.795 × 10−4) calculated from the FPSQ model based on the FTIR spectroscopy are close to the measured values (εr = 16.95, tanδ = 2.44 × 10−4), and the dielectric response mainly comes from the modes of F1u(1) at 145 cm−1 and F1u(2) at 284 cm−1.
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