Abstract
A novel low-temperature fired BaMnV2O7 ceramic was fabricated with solid-state reaction. Rietveld refinements based on X-ray diffraction data and TEM analysis indicated that BaMnV2O7 exhibited a monoclinic structure with a P21/n space group. The dense microstructure of the BaMnV2O7 ceramic obtained at 850 °C was examined by scanning electron microscopy. The increasing content of V4+ affected the quality factor, which was confirmed by X-ray photoelectron spectroscopy. The intrinsic dielectric properties were obtained from far infrared reflectivity spectra. Additionally, the BaMnV2O7 ceramic showed good chemical stability with a Ag electrode and desirable microwave dielectric performance at 850 °C: ϵr = 11.7, Q × f =20040 GHz and τf = −48.2 ppm/°C, which can potentially be applied in LTCC technology.
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