Ion.dat
The ion.dat file contains information about different magnetic ions, where each row defines an ion. The meaning of the columns are the following:
- Name of ion, string. These labels can be used in the [[SwpropertiesEN#2][sw.unit_cell]].label field to assign different ions to crystallographic positions, predefined names follow the [M][element name][charge] notation similarly to FullProf.
- Magnetic form factor, double. It is either 7 or 9 doubles the A, a, B, b, ... coefficients in the formula: LATEX\langle j_0(Q_s)\rangle = A\cdot exp(-a\cdot Q_s^2) + B\cdot exp(-b\cdot Q_s^2) + C* exp(-c\cdot Q_s^2)+D\cdot exp(-d\cdot Q_s^2) + EPATEX.
- Spin quantum number, double. This number defines the spin value that is used as default in the sw.addatom mathod if 'S' is undefined.
See also [[AtomdatEN][atom.dat]], SW_MFF.