Magnetic properties of DyMn_2Si_2, DyMn_2Ge_2 and their mixed compounds DyMn_2(Si_Ge_x)_2, which display a variety of interesting magnetic behaviors originating in competing magnetic interactions and anisotropy, have been investigated systematically by magnetization mesurements ^Dy Mossbauer spectroscopy and neutron diffraction experiments. This report presents a review of the results mainly obtained by the magnetization measurements
