DAFS - Universidad de Zaragoza

Grazing incidence anomalous diffraction : As K-edge (11867 eV)
GIDAFS spectra of the correlation satellites (-1) (BM2-D2AM-ESRF)
Intensity (a.u.)
(440)
Energy
(420)
In-plane reflections
The GIDAFS oscillations :
a) As local atomic environment
b) QWrs strain accomodation
c) QWrs composition
- ∆φ=φ T-φ A, |F As |/(f 0As x|F T |) : give S D (EDAFS normalisation factor)
and ∆ψ=φ 0-φ A (crystallographic phase shift)
- One assume one equivalent crystallographic site (Zinc-Blende)
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