Microwave dielectric properties of Mg2TiO4 ceramics synthesized via high energy ball milling method

Mg2TiO4 ceramics were prepared with MgO and TiO2 by high energy ball milling method. Highly reactive nanosized Mg2TiO4 powders were successfully synthesized at 1000 °C in oxygen atmosphere for milled 30 h, about 200 °C lower than that by a conventional solid-state reaction process. The pure Mg2TiO4 nanopowders average particle size were reduced to about 163 nm. Mg2TiO4 ceramics at 1175 °C had the excellent microwave dielectric properties ɛγ = 13.9, Q × f = 98,600 GHz, τf = −50.9 ppm/°C.