High energy XAFS study of Sm : K-edge in Sm2Fe17Nx

High energy XAFS studies of Sm:K-edge in Sm2Fe17Nx with x=0.0, less than or equal to 0.1, 0.5, 2.0 and 3.0 were carried out at room temperature in ord er to clarify the relation between the local structure around the Sm-atom a nd the change of the magnetic property due to the absorption of nitrogen at om. In the XANES region, we firstly found the change of Sm electron state b y nitriding because of the change of the shape in the absorption edge jump. In the result of the EXAFS spectra, we confirmed that the Sm-Fe distance w as expanded monotonously due to the absorption of N-atom.