SUBLATTICE ANISOTROPY CONSTANTS OF DY2FE14B AND TB2FE14B AT 4.2 K

The rare-earth sublattice anisotropy of Dy2Fe14B and Tb2Fe14B at 4.2 K have been analyzed by semi-graphical method on the bases of two subla ttice model. The anisotropy constants of Dy-sublattice are determined as K-1Dy = 1600 J/kg and K-2dy = 6600 J/kg, and the constant of Tb-sub lattice as K-1Tb = 4300 J/kg. The magnetizations calculated by energy minimum method by applying the sublattice anisotropy constants reprodu ced well the experiments and satisfied the simulation assumptions. (C) 1998 Elsevier Science B.V. All rights reserved.