The computer programs, which will be described in the following, have been written in order to produce the magnetism diagrams presented in Part II of this volume. The diagrams show the average or the principal magnetic moments of the d N configuration (N =1, 2,…,9) in the symmetry of point group G as functions of certain parameters of the model and of temperature. In the ligand field approach of tetragonal symmetry, e.g., these parameters are Dq, Ds, and Dt.
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