The dielectric properties of the Ba (Co 1/3 Nb 2/3 )O 3 –Ba(Zn 1/3 Nb 2/3 )O 3 system were determined. Ba (Co 1/3 Nb 2/3 )O 3 –Ba(Zn 1/3 Nb 2/3 )O 3 has a complex perovskite structure, a high dielectric constant, a low dielectric loss, and a low temperature coefficient of the resonant frequency. A solid‐solution ceramic with 0.7Ba (Co 1/3 Nb 2/3 )O 3 ·0.3 Ba(Zn 1/3 Nb 2/3 )O 3 has a dielectric constant of K=33.5, Q=11000 at 6.5 GHz, and a temperature coefficient of the resonant frequency of τ f =0 ppm/°C. The temperature coefficient of resonant frequency can be varied by changing the composition. The Q values of the ceramics can be increased by annealing in a nitrogen atmosphere. These ceramics can be used for resonant elements and stabilized oscillators.
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Endo et al. (1987) studied this question.
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