Effects of sintering process on the structural, dielectric, and optical absorption properties of KNbO3‐based ceramics

The influence of the sintering temperature and the dwell time on the structural, optical, and dielectric properties of [KNbO 3 ] 0.8 [Ba(Ni 0.5 Nb 0.5 )O 3−δ ] 0.2 ceramics ( KBNNO ) was systematically investigated. X‐ray diffraction measurements of the ceramic bodies sintered at different temperatures indicated that all samples presented a cubic‐like structure. However, the results remarkably revealed that both the sintering temperature and the...