摘要: The exchange coupling between the 4f magnetic electrons and the 5d-like screening electrons is calculated for Dy, Er, and Yb dilute magnetic alloys. The coupling is shown to be anisotropic, with significant orbital contributions f... 展开 The exchange coupling between the 4f magnetic electrons and the 5d-like screening electrons is calculated for Dy, Er, and Yb dilute magnetic alloys. The coupling is shown to be anisotropic, with significant orbital contributions for Dy and Yb. The g-shift expression is derived for arbitrary crystal-field splitting of the 5d virtual bound states. The linewidths are computed in the limit of no crystal-field splittings. Comparison with experiments on Dy and Er in Ag and Al hosts reveals good agreement. (Author) 收起