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The Ba3(VO4)2–x wt% Co2O3 (x = 0.5–5) ceramics were prepared by the solid state reaction method in order to reduce the sintering temperature. The effects of the Co2O3 additions on the phase… Click to show full abstract
The Ba3(VO4)2–x wt% Co2O3 (x = 0.5–5) ceramics were prepared by the solid state reaction method in order to reduce the sintering temperature. The effects of the Co2O3 additions on the phase composition, microstructures, sintering characteristics and microwave dielectric properties of Ba3(VO4)2 ceramics are investigated by an X-ray diffractometer, a scanning electron microscope and a network analyzer. As a result, the Q × f value of 54,000 GH, the εr of 14.6 and the τf value of +58.5 ppm/°C were obtained in the sample of the Ba3(VO4)2–3 wt% Co2O3 ceramic sintered at the temperature of 925 °C, which is capable to co-fire with electrode metal of high conductivity such as Ag (961 °C). Moreover, the Q × f values of the sample with Co2O3 higher than that of 3 wt% additions decreased because of the formation of Ba2V2O7 phase.
Journal Title: Journal of Materials Science: Materials in Electronics
Year Published: 2017
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