INFLUENCE OF THE ANISOTROPY ON 4F-3D INTERACTIONS IN HOFE10SI2

Two molecular field based methods are applied to establish 4f-3d inter actions in HoFe10Si2; analysis of the ordering temperatures and analys is of the field dependence of the magnetization curve. When neglecting anisotropy influence a good correspondence between these two methods was found; the molecular field coefficient obtained from magnetization curve was established to be n(RT) = -0.79 T f.u./mu(B), and from Curi e temperature analysis n(RT) = -0.74 T f.u./mu(B). A large anisotropy influence on the magnetization curve throughout the bending process ha s been found as a cause of nonlinear increase of the magnetization and low value of first critical field B-cr,B-1 = 2.33 T.