Investigation on the effect of sintering under oxygen atmosphere on microstructure and microwave dielectric properties of ZnNb 2 O 6 ceramics

The effect of sintering in air and oxygen atmospheres on microstructure and microwave dielectric properties of ZnNb2O6 ceramics has been investigated and compared. For most cases samples sintered in oxygen atmosphere exhibited higher density than those sintered in air atmosphere. The highest densities obtained for samples sintered in air and oxygen atmospheres were 93.6 and 95.2% of the theoretica...