Joćo Batista wrote:
>
> I have problems to fit zero point and specimen displacement together
> using Fullprof. What can I do to resolve this problem?.
>
>
The Rietveld mailing list old archives at :
http://pcb4122.univ-lemans.fr/forum/rietveld_l/index.html
are explicit when searching with keywords : specimen displacement.
Particularly, the old 1994 mail :
http://pcb4122.univ-lemans.fr/forum/rietveld_l/1994/00000038.htm
shows that using a big damping factor (O.2 or less) may stabilize
the unstable simultaneous refinement of zeropoint, specimen
displacement and transparency. Divergence may precede
convergence. You have to be patient.
best wishes,
Armel Le Bail - Université du Maine, Laboratoire des Fluorures,
CNRS ESA 6010, Av. O. Messiaen, 72085 Le Mans Cedex 9, France
http://www.cristal.org/
