| abstract |
A black mixed oxide material having a high safety, good color tone, and economical efficiency and a method of manufacturing the same, while the chromium itself is not contained in the main component regardless of the valence of chromium, and also contains no cobalt in the main component. Various products using oxide materials are provided. As a mixed oxide containing La, Mn, and Cu as the main component and not containing Cr and Co as the main component, the content of La, Mn, and Cu in the mixed oxide is 100% as the next oxide. Satisfies the ratio of La to 35 to 70 wt% as La 2 O 3 , 25 to 60 wt% as MnO 2 , and 0.5 to 10 wt% as CuO as the amount of oxide in weight %. do. |