A novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric material

Publication date: November 2019Source: Materials Science and Engineering: B, Volume 250Author(s): Liping Zhao, Peng Liu, Zhifen FuAbstractA novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric ceramic was fabricated by using the nanopowders (317 nm) derived from high energy ball milling (HEBM) method. An orthorhombic ixiolite structure was detected for Mg0.5Ti0.5NbO4 ceramics coupled with a minor of second phase Mg0.167Nb0.33Ti0.5O2. With increasing sintering temperature, the amount of Mg0.167Nb0.33Ti0.5O2 phase decreased as well as the dielectric constant (εr) and temperature coefficient of resonant frequency (τf). The ceramics sintered at 1140 °C for 4 h exhibited optimum microwave dielectric properties εr = 38.8, Q × f = 19,710 GHz and τf = 1.3 ppm/°C.Graphical abstract
Source: Materials Science and Engineering: B - Category: Materials Science Source Type: research