Abstract
The relationship between B-site bond valence and microwave dielectric properties of Ca[(Zn 1/3 Nb 2/3 ) 1 − x Ti x ]O 3 ceramics with a perovskite structure prepared by solid reaction method was investigated. As the bond valence of B-site increased with increasing of Ti, the dielectric constant (K) and quality factor (Q ƒ) varied from 42 to 115 and 13030 to 5030 GHz, respectively. The temperature coefficient of resonant frequency (TCF) increased from ∼ -28 to ∼ 336 ppm/°C. The theoretical polarizabilities (α theo ) from additivity rule were compared with the measured polarizabilities (α mea.) from Clausius-mosotti equation. Therefore, the microwave dielectric properties can be controlled with the change of bond valence.
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