Synthesis and characterization of microwave dielectric BaTi4O9 ceramics via EDTA–citrate gel process

EDTA–citrate gel process is used to prepare microwave dielectric BaTi4O9 ceramics. The thermal decomposition of the precursor was studied by thermal analysis (DTA/TG/DTG), XRD, FTIR and SEM. The morphology and the dielectric properties of the BaTi4O9 ceramics, fully densified at 1150 °C for 2 h, were also investigated.