>Seems to be a simple problem, huh? But I assure, that you will hardly
>arrive to make the difference between cubic, orthorhombic and monoclinic
>with nothing but powder-profile fitting.
Your problem is to define application limits to the Rietveld method.
Your future is in the hands of publishers and reviewers. To you to
know how too far you can go... On my side, I love beautiful powder
patterns with thousands of well defined reflections. I have no pressure
on me for going to the Rietveld method limits on ill-crystallized
samples (have tried some annealing ?-). If you have a boss, is he a
Rietveld expert ? Do you really want to add some more manuscripts
to the 50000 or so papers on perovskites materials ?
Armel,
maybe I should go back to sleep ?
Armel Le Bail - Universite du Maine, Laboratoire des Fluorures,
CNRS ESA 6010, Av. O. Messiaen, 72085 Le Mans cedex 9, France
http://fluo.univ-lemans.fr:8001/
http://www.cybercable.tm.fr/~cristal/welcome.html