John

I would definitively try to do some Pair distribution Function PDF
analysis of your data. As you know to do this analysis, there are few
calibration files needed and few specs on the measurement side.
PDF has been very successful in finding some amorphous fraction in
crystalline material and if I recall well explained the difference in the
properties of two samples which from the rietveld point of view were just
the same.



Th. Proffen, K.L. Page, S.E. McLain, B. Clausen, T.W. Darling, J.A.
TenCate, S.Y. Lee and E. Ustundag, Atomic Pair Distribution Function
Analysis of Materials containing Crystalline and Amorphous Phases, Z.
Krist. 220, 1002-1008 (2005).

K.L. Page, Th. Proffen, S.E. McLain, T.W. Darling and J.A. TenCate, Local
Atomic Structure of Fontainebleau Sandstone: Evidence for an Amorphous
Phase ?, Geophys. Res. Lett. 31, L24606 (2004).
>
> Dear Users,
> I'm trying to determine the percentage crystallinity in a
> crystalline/amorphous mixture, could someone point me in a foolproof
> direction.
>
> Thanks,
> John
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