returns the magnetic form factor values and the coefficients
[formFactVal, coeff, S] = SW_MFF(atomName, {Q})
Input:
atomName String, contains the name of the magnetic ion in FullProf
notation (e.g. Cr^3+ --> 'MCR3' or 'Cr3'). It can be also a
vector of the 7 coefficients, see below. If the string
contains whitespace, the first word will be used as input.
Q Momentum transfer in Angstrom^-1 units with dimensions of
[1 nQ] or [3 nQ], optional.
Output:
formFactVal Value of form factor, evaluated at the Q points if Q is
defined.
coeff Form factor coefficients according to the following
formula:
<j0(Qs)> = A*exp(-a*Qs^2) + B*exp(-b*Qs^2) + C*exp(-c*Qs^2) + D*exp(-d*Qs^2) + E,
where Qs = Q/(4*pi) and A, a, B, ... are the coefficients.
Optionally the (D,d) coefficients are zero.
S Value of the spin quantum number (last column in ion.dat).
The source for the form factor data are:
[1] A.-J. Dianoux and G. Lander, Neutron Data Booklet (2003).
[2] K. Kobayashi, T. Nagao, and M. Ito, Acta Crystallogr. A. 67, 473 (2011).