Abstract
The Bi 3SbO 7 ceramic was prepared by the solid state reaction method and its phase evolution at different temperatures was studied. Low temperature phase α-Bi 3SbO 7 was formed at about 890 °C and it started to transform to high temperature phase β-Bi 3SbO 7 at about 960 °C. Microwave dielectric constants of α-Bi 3SbO 7 ceramic and β-Bi 3SbO 7 ceramic were 43.2 and 37.6, Qf value were 2080 and 5080 GHz, respectively. TCF of α-Bi 3SbO 7 ceramic was near zero and TCF of β-Bi 3SbO 7 ceramic was about −120 ppm/°C. The Bi 3SbO 7 ceramic is a promising candidate for low temperature co-fired ceramic (LTCC) technology due to its large dielectric constant, low dielectric loss at microwave region, low sintering temperature and simple composition.
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