The microwave dielectric properties and microstructures of the (1-x)(Mg_0.95Zn_0.05)₂TiO₄-x(Ca_0.8Sr_0.2)TiO₃ ceramics prepared using the conventional solid-state route were investigated. The structure and microstructure were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Ilmenite-structured (Mg_0.95Zn_0.05)TiO₃ was detected as a secondary phase. The coexistence of the second phase, however, did not degrade the dielectric properties of the specimen because the phases were compatible. At x = 0.07, a dielectric constant (ε_r) of ~17.86, a quality factor (Q × f) value of 133,600 Hz (at 10 GHz), and a temperature coefficient of resonant frequency (τ_f) of ~ −3 ppm/°C were obtained for 0.93(Mg_0.95Zn_0.05)₂TiO₄–0.07(Ca_0.8Sr_0.2)TiO₃ ceramic sintered at 1240 °C for 4 h. The dielectric is proposed as a candidate material for low –loss microwave applications.

研究了采用常规固态法制备的（1-x）（Mg _0.95 Zn _0.05）₂ TiO ₄ -x（Ca _0.8 Sr _0.2）TiO ₃陶瓷的微波介电性能和微观结构。通过X射线衍射（XRD）和扫描电子显微镜（SEM）分别分析结构和微观结构。钛铁矿结构的（Mg _0.95 Zn _0.05）TiO ₃被检测为第二相。然而，第二相的共存并没有降低样品的介电性能，因为这些相是相容的。在x = 0.07时，介电常数（_εr）约为17.86），对于0.93（Mg _0.95 Zn）获得的品质因数（Q×f）值为133,600 Hz（在10 GHz时），谐振频率温度系数（_τf）为〜-3 ppm /°C _0.05）₂ TiO ₄ –0.07（Ca _0.8 Sr _0.2）TiO ₃陶瓷在1240°C烧结4 h。电介质被提议作为低损耗微波应用的候选材料。