Dear François,
I've to admit that I am no expert on the quantitative phase analysis. If
the analysis suggest 40% amorphous compound, I'd expect that should be
clearly visible in the diffraction pattern as a fairly strong, broad
maximum with a FWHM of some 7 to 10° (CuKalpha). If you do not see that,
then the quantitative analysis is certainly misleading.
Best
Reinhard Neder
Am 03.03.21 um 13:34 schrieb François Goutenoire:
Dear Rietveld users,
I have some industrial compound presenting a strong hyper-Lorentzian
peak shape (eta=1.1 with HighScore). When we calculate the amorphous
content after an internal standard addition, the result is 40%. The
micro-absorption effect has been minimized (mu of the internal
standard is closed to the compound).
But with some electronic transmission analysis no amorphous is observed.
The question is : Does a strong hyper-Lorentzian peak shape could
influence quantitative analysis ?
François
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Prof. Dr. Reinhard Neder
Kristallographie und Strukturphysik
Universität Erlangen
Staudtststr. 3; 91058 Erlangen
tel. +49-9131-8525191
fax +49-9131-8525182
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