Analysis of the magnetic properties of R₂Fe₁₇(R identical to Gd, Tb, Dy, Ho, Er or Tm)

Abstract

The values of the R-Fe exchange field and the crystalline-electric-field parameters are evaluated by fitting the calculations to the experiments for R2Fe17 (R identical to Gd, Tb, Dy, Ho, Er or Tm). The experiments include the magnetization curves along the crystal axes at 4.2 K for the Gd, Tb, Dy, Ho and Er compounds, the energy differences between the energy levels for the Ho ion in Ho2Fe17, and the spin reorientation temperature TSR and the easy-magnetization direction above and below TSR for Tm2Fe17.