Synthesis and Dielectric Properties of MgTiO3 and Cu0.5Ti0.5NbO4 Composite Ceramics

Abstract

MgTiO3 and Cu0.5Ti0.5NbO4 ceramics were synthesis through solid state reaction route. The phase formation behaviour during synthesis and after sintering was investigated using x-ray diffraction. The lattice parameter of MgTiO3 was evaluated through Rietveld refinement of its XRD pattern. Composites of the two ceramics were prepared by mixing two pure phases and then sintering of compacts. The densification behaviour of composite ceramics was evaluated by measuring bulk density of sintered ceramics. Microstructure developed on sintered pellet was investigated using FESEM. Elemental mapping on sintered ceramics was performed using EDS. The dielectric permittivity, dielectric loss and impedance of the composite ceramics were measured using LCR meter. The properties of composite ceramics were co-related and explained.