Ce2 D3.7 Fe16 Si Artigas M, Fruchart D, Isnard O, Miraglia S, Soubeyroux J Journal of Alloys and Compounds 270 (1998) 28-34 Structural, magnetic and hydrogenation properties of R2 Fe17-x Six alloys (R = rare earth element). I. Crystal structure behaviour of the Ce2 Fe17-x Six Hy system (0