Structural and Microwave Dielectric Properties of Mg ₂ TiO ₄ Ceramics Synthesized by Mechanical Method

Low loss Mg ₂ TiO ₄ ( MTO ) ceramics have been synthesized by mechanical synthesis method. The effect of processing parameters, on initial particle size, microstructure, relative density, and microwave dielectric properties of MTO ceramics are investigated. The maximum relative density was obtained 97.75%, and uniform microstructure is observed for the sample sintered at 1325°C for 3 h. The driving force for the sintering can be attributed to the surface energy of fine powders and their defect energy. There is not much variation in dielectric constant (ε _r ) where as Q × f _o is affected and the values of Q × f _o are in the range of 99,500–155,500.