Microwave Dielectric Properties of (1-x)(Ca0.61Nd0.26)TiO3–x(Li0.5Sm0.5)TiO3
(1-x)(Ca0.61Nd0.26)TiO3-x(Li0.5Sm0.5)TiO3 (0.2 ≤ x ≤ 0.7) ceramics were prepared by solid-state reaction method and the microwave dielectric properties of the resultant materials at different (Li0.5Sm0.5)TiO3 contents were investigated. A single phase of perovskite in all samples was confirmed by XRD patterns. With increasing (Li0.5Sm0.5)TiO3 content, Q×f value and dielectric constant (εr) decrease slightly and the temperature coefficients of the resonant frequency (τf) of the specimens decreases noticeably. The optimum parameters, i.e.,εr = 109, Q×f = 5259 GHz and τf = ~0 ppm/°C, for the composition of 0.4(Ca0.61Nd0.26)TiO3-0.6(Li0.5Sm0.5)TiO3 was obtained when keep the calcination temperature at 1250°C for 3 h.
Wei Pan and Jianghong Gong
W. Wang, Z. L. Tang, Z. T. Zhang, "Microwave Dielectric Properties of (1-x)(Ca0.61Nd0.26)TiO3–x(Li0.5Sm0.5)TiO3", Key Engineering Materials, Vols. 336-338, pp. 287-289, 2007