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CoFe2O4−K0.5Na0.5NbO3 (CFO−KNN) composites were sintered in air at 1100°C for 2 h. The relative density of sintered CFO−KNN varied with the KNN/CFO ratio and when the volume fraction of KNN reached 50% or more, the sintered composites had a relative density higher than both of the components (i.e., individually sintered KNN and CFO). The highest relative density (94%) was obtained with the composites...