Abstract
Solid-state reaction process has been used to fabricate (Ca0.8Sr0.2)(ZrxTi1−x)O3 ceramics, and several characteristics of the (Ca0.8Sr0.2)(ZrxTi1−x)O3 ceramics have been investigated. The substitution ratio effects on the different phase change and the quality factors of (Ca0.8Sr0.2)(ZrxTi1−x)O3 ceramics were improved because of the solid solution of Zr4+ substitution in the B-site. An excess of Zr4+ resulted in the formation of high amount of secondary phase of CaZrO3 and SrZrO3 with higher quantity of substitution, affecting the microwave dielectric properties of (Ca0.8Sr0.2)(ZrxTi1−x)O3 ceramics. The temperature coefficient of resonant frequency (τf) of (Ca0.8Sr0.2)(ZrxTi1−x)O3 ceramics also improved with increasing Zr content, and the variation in τf was attributed to the formation of secondary phase of CaZrO3 and SrZrO3.
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