TiC/Al2O3 composite was synthesized through air-exposed combustion synthesis using Al/TiO2/C initial mixture. Al2O3 was formed as fibers of submicron/nanometer thickness and several microns length on the external and internal pores. The nanofibers were co

The microwave dielectric properties of Nd(1−2x/3)Srx(Mg0.5Sn0.5)O3 ceramics were examined with a view to their exploitation in mobile communication. The Nd(1−2x/3)Srx(Mg0.5Sn0.5)O3 ceramics were prepared by the conventional solid-state method with various sintering temperatures. The X-ray diffraction patterns of the Nd2.94/3Sr0.03(Mg0.5Sn0.5)O3 ceramics revealed no significant variation of phase with sintering temperatures. A density of 6.88 g/cm3, a dielectric constant (εr) of 19.3, a quality factor (Q×f) of 91,200 GHz, and a temperature coefficient of resonant frequency (τf) of −65 ppm/°C were obtained for Nd2.94/3Sr0.03(Mg0.5Sn0.5)O3 ceramics that were sintered at 1550 °C for 4 h.