XMCD has recently become popular due, in part, to the utility of many sum rules in XANES region. The EXAFS region can be used to determine the position of spins relative to magnetic field.
Gd L1 edge.
TITLE Gd l1 hcp
HOLE 2 1.0 2=l1 edge, s0^2=1.0
SPIN 1
EXCHANGE 2 0.0 0.0
CONTROL 1 1 1 1 1 1
RPATH 7.29
PRINT 5 0 0 0 0 3
CRITERIA 0.0 0.0 curved plane
DEBYE 150 176 temp debye-temp
XANES
POTENTIALS
* ipot z label
0 64 Gd
1 64 Gd
ATOMS
the list of atoms is created by ATOMS program
---------------------------------------------
title Gd , hcp
! Wycoff, vol.1 p.331
space hcp
rmax = 9.0
a = 3.6354
c = 5.7817
atom
Gd 0.33333 0.66667 0.25 center
-----------------------------------