Influence de la variation du facteur de structure avec l'écart à la position de Bragg, sur l'analyse des profils de raie

The 001 X-ray line profile of Ni₃Fe_1-xAl_x ordered alloys is analysed by taking into account the variation of the structure factor along the profile. Between the 001 and 002 reciprocal nodes, this variation is steep enough to give a significant modification of the mean thickness of the ordered domains in the [001] direction.