[Ifeffit] Question about EXAFS fitting of mixtures

[Soyoung Kim]

Dear all,

While fitting EXAFS for tiny Pt nanoparticles, a simple question occurred
to me. For these two scenarios:
1. All Pt atoms are coordinated to 3 O atoms and 3 Pt atoms each.
2. Half of the Pt atoms are coordinated to 6 O atoms and half to 6 Pt atoms.

If we fit only single-scattering paths, would it be possible to tell apart
these two scenarios with EXAFS fitting? What about linear combination
analysis of the XANES?

Thank you,
Soyoung
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