  X-ray Absorption Near Edge Structure [XANES] of FePt nanoclusters has been
studied using a full multiple scattering, self-consistent field [SCF],
real-space Green`s function approach realized via the powerful ab initio FEFF8
code. One purpose of our study is to determine the sensitivity of Pt L3 edge
with respect to the size and shape of the FePt nanoclusters. We also give the
results of the calculations with respect to the Fe L3 edge. Calculations are
made with and without core-hole for two main reasons, to check and cross-check
the FEFF code and also since in some cases it is known such as Pt clusters that
better results are obtained without the core-hole. This is mainly because the
screening electron will occupy empty d or f states and correspondingly reduce
the white line intensity.
