Abstract- Microwave and terahertz dielectric properties of MgTiO3–CaTiO3 ceramics

J.B. HuangB. YangC.Y. YuG.F. ZhangH. XueZ.X. XiongG. ViolaR. DonnanH.X. YanM.J. Reece

http://www.sciencedirect.com/science/article/pii/S0167577X14017698?via=ihub

The THz dielectric properties of MgTiO₃–CaTiO₃ ceramics are reported. The ceramics were prepared via a solid-state reaction route and the sintering conditions were optimized to obtain ceramics with high permittivity and low loss in the terahertz frequency domain. The amount of impurities (MgTi₂O₅) and grain size increased with increasing sintering temperature. The dielectric properties improved with increasing density, and the best terahertz dielectric performance was obtained at 1260 °C, with a permittivity of 17.73 and loss of 3.07×10⁻³. Ceramics sintered above 1260 °C showed a sharp increase in loss, which is ascribed to an increase in the impurity content.