Microwave dielectric properties of the (1 − x)(Mg0.97Zn0.03)(Ti0.97Sn0.03)O3–x(Ca0.8Na0.1Sm0.1)TiO3 ceramic system

Abstract

Microwave dielectric ceramics of (1 − x)(Mg0.97Zn0.03)(Ti0.97Sn0.03)O3–x(Ca0.8Na0.1Sm0.1)TiO3 (MZTS–CNST, 0.05 ≤ x ≤ 0.08) were fabricated by a conventional solid-state reaction method. The effects of the sintering temperature and composition on the phases, microstructures, and microwave dielectric properties were studied. A relatively low sintering temperature of 1325 °C is needed for the MZTS–CNST ceramic samples. The optional microwave dielectric properties were achieved at x = 0.08 with er = 21.5, Q × f = 60,110 GHz, and a near-zero τf of 1.69 ppm/ °C.