> >Refining on Crystallite size and strain in XFIT as part of
> >fundamental parameters fitting is important.
> 
> No preliminary results to show from XFIT applied to the 
> Size/Strain Round Robin CeO2 sample ?

Unfortunately, XFIT for Win95 (while freely available) is no 
longer maintained - and (unlike BGMN and Topas) does not 
have the tube tails correction for Fundamental Parameters 
fitting.

Allowing Crystallite size and strain to refine gives 
excellent fits on standards like Y2O3.  But the
size/strain values certain properties of the sample 
which may not be valid(?).  I am more interested in
using XFIT Fundamental parameters fitting for high 
accuracy peak positions applied to indexing and 
unit cell refinement.

Lachlan.




-- 
Lachlan M. D. Cranswick

Collaborative Computational Project No 14 (CCP14)
    for Single Crystal and Powder Diffraction
Daresbury Laboratory, Warrington, WA4 4AD U.K
Tel: +44-1925-603703  Fax: +44-1925-603124
E-mail: [EMAIL PROTECTED]  Ext: 3703  Room C14
                           http://www.ccp14.ac.uk

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