Abstract
Two microwave dielectric ceramics ReVO4 (Re = Nd, Sm) prepared through a conventional solid-state reaction method were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis revealed that pure and dense NdVO4 and SmVO4 ceramics with tetragonal structure could be obtained when sintered in the temperature range 1100°C-1180°C for 4 h. The samples sintered at 1160°C exhibited the best densification with relative densities larger than 96%. NdVO4 ceramic exhibited promising microwave dielectric properties with a relative permittivity (ε r ) of 12.0, a quality factor (Q × f) of 36,440 GHz, and a negative temperature coefficient of resonance frequency (τ f ) of −44.3 ppm/°C. SmVO4 had a ε r ∼ 11.7, a Q × f ∼ 38,620 GHz and a τ f ∼ −48.4 ppm/°C.
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Li, W., Fang, L., Sun, Y. et al. Preparation, Crystal Structure and Microwave Dielectric Properties of Rare-Earth Vanadates: ReVO4 (Re = Nd, Sm). J. Electron. Mater. 46, 1956–1962 (2017). https://doi.org/10.1007/s11664-016-5179-9
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DOI: https://doi.org/10.1007/s11664-016-5179-9