Abstract:
The RE2Ti2SiO9 [RE = La, Nd and Pr] ceramics are synthesized by solid state ceramic route. These materials exhibit a relative permittivity of about 30 with quality factor in the range 19,600-33,700 GHz. They also showed relatively low values of tau(f). The microwave dielectric properties of these materials are studied for the first time. The La2-xPrxTi2SiO9 [x = 0-2] based solid solution are also synthesized and single phase is confirmed over the whole composition range. The lattice parameters showed a linear variation with increasing x which can be well correlated with the ionic radius of the RE3+ ions.
