Laser absorption properties of Sm₂(C₂O₄)₃∙10H₂O prepared by coprecipitation method

Sm₂(C₂O₄)₃∙10H₂O was prepared by coprecipitation method with Na₃Cit as chelating agent. The microstructures were studied using powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR). The 1060 nm laser absorption properties were characterized by spectrophotometer. The results showed that the composition and morphology of Sm₂(C₂O₄)₃∙10H₂O could be tuned by varying the molar ratio of Na₃Cit to Sm³⁺ and the aging time. Then, the 1060 nm laser absorption properties were optimized. The spectral reflectivity at 1060 nm was low to 0.831 when the molar ratio of Na₃Cit to Sm³⁺ was 1.2 and the aging time was 24 h. The as-prepared Sm₂(C₂O₄)₃∙10H₂O can be applied as an effective laser absorber.