CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF Y_2Fe_(17-x)Mn_x

X-ray diffraction has proved that the structure of Y2Fe17-xMnx(x≤6.0) compounds is same as Y2Fe17. The study on the lattice constants, Curie temperature and magnetization of the Y2Fe17-xMnx compounds has shown that the lattice constants do not increase continuously with increasing Mn content and have a minimum at x=2.0. The Curie temperature increases from 328 K (x=0.0) to 342 K (x=0.3), and then decreases with increasing Mn content. The saturation magnetization decreases with increasing Mn content.