In this study, cobalt-doped ZnO Nano pigments were synthesized by combustion method, using glycine as fuel. Prepared powders were characterized by X-ray diffraction, vibration Sample Magnetometer and Uv-Visible. X-Ray diffraction patterns showed the formation of wurtzite single phase with secondary Co3O4 phases. In different fuel-to-oxidizing ratios, we saw different percentages of the secondary phases. The results of the magnetic studies showed that there is a ferromagnetic property in the synthesized Nano pigments in all three ratios of fuel to oxidizers. Using the spectrophotometer, the color properties of the samples prepared in three different ratios of fuel to oxidizing and in percentages (1-X= 0.06, 0.54, 1) of Cobalt Doped were characterized. As the amount of cobalt-doped increases in all three ratios of fuel to oxidizing the reflectance spectrum of the absorption band from the green to the blue direction was indicated.

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