DAFS - Universidad de Zaragoza
DAFS - Universidad de Zaragoza
DAFS - Universidad de Zaragoza
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Grazing inci<strong>de</strong>nce diffraction<br />
BM2-D2AM-ESRF<br />
In-plane scattering Spatial selectivity<br />
[110]<br />
Intensité (unité arb.)<br />
Intensity<br />
10 5<br />
10 4<br />
Correlation<br />
statellite -1<br />
QWrs<br />
substrat InP<br />
(440) InP (440)<br />
substrat<br />
InAs bulk<br />
1/d=0.93<br />
0.94 0.95 0.96 0.97 0.98<br />
q=2sin(θ)/λ (Å -1 )<br />
radial scan : Qr=1/d (Å -1 )<br />
•a InAs=0.60584nm (1/d 440=0.934 Å -1) ; a InP=0.58686nm (1/d 440=0.964 Å -1)<br />
• Diffraction in the vertical plane : polarization ⊥ to the surface<br />
• Radial scan : strain, correlation, shape and composition sensitive<br />
23/50
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