摘要
The crystal field parameters B^(°)_(2),B^(-2)_(2),B^(°)_(4),and B^(4)_(4)are determined Empirically on the basis of one sublattice model.These parameters can account for the major magnetic anisotropy of all of R_(2)Fe_(14)B(R:rare-earth)including the easy cone of Nd_(2)Fe_(14)B and Ho_(2)Fe_(14)B at 4.2K.
