Abstract

Abstract In this paper, we study the behavior of the B-site behavior with the incorporation of Sn 4+ ion in (Ca 0.8 Sr 0.2 )TiO 3 ceramics. An excess of Sn 4+ resulted in the formation of a secondary phase of CaSnO 3 and SrSnO 3 affecting the microwave dielectric properties of the (Ca 0.8 Sr 0.2 )(Sn x Ti 1− x )O 3 ceramics. The dielectric properties of the (Ca 0.8 Sr 0.2 )(Sn x Ti 1− x )O 3 ceramics were improved because of the solid solution of Sn 4+ substitution in the B-site. The temperature coefficient of resonant frequency ( τ f ) of the (Ca 0.8 Sr 0.2 )(Sn x Ti 1− x )O 3 ceramics also improved with increasing Sn content.

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