Abstract: The Eu²⁺ doped Sr₂CaMoO₆ powders with high emissivity were fabricated by the traditional solid state reaction at the temperature of 1 100 ℃. The X-ray powder diffraction (XRD), infrared transmittance spectra (IR), Raman spectra and Infrared emission properties were examined to study the structure and the infrared emission properties of the samples. Also the effects of the different amount of Eu²⁺ on the infrared emissivity were investigated. It was found that the XRD patterns, infrared transmittance spectra, Raman spectra and infrared emissivity would change according to the increase of the amount of Eu²⁺,and the Eu²⁺ ions replace the Sr²⁺ site in the structure. When the content of Eu²⁺ is about 5%, the powders reach the highest emissivity with 0.886 at the range of 3~5 μm , 0.936 at the range of 8~14 μm and 0.915 at 1~22 μm.

Key words: Sr₂CaMoO₆； doped； emissivity； infrared radiation materials