I've been doing some multi-phase Rietveld analysis of powder xray data using MAUD and have come across a system that has mostly needles propagated along the b-axis. There is clearly some preferred orientation in the pattern but I'm not sure how to tell the program that this is the case.
The help files online appear to dance around this subject without being explicit about how to actually do it. Does anyone know the program well enough to walk me to the set of options?
Thanks.
http://eps.berkeley.edu/~wenk/TexturePage/MAUD.htm
Here are comprehensive step-by-step tutorials on how to use MAUD for the texture analysis. You should definitely read through them to understand how MAUD works with preferred orientations.
If you need help with your specific case, please give some extra information on the parameters of your instrument (e.g., 1D or 2D detector, etc.), your measurements (how many patterns do you have from the system etc.), and the structure of the oriented phase.
Thanks both. It's a 1D detector with a single pattern, I seem to be doing fine with isotropic samples. There are 2 phases in the mix (both P21/n) and both are high aspect-ratio needles grown along the b-axis.
Also, if you get stuck the program now has a working forum that is frequented by the author of the program, Luca Lutterotti. You can find it at: http://maud.freeforums.org/index.php
I have a question here. Can MAUD simulate 2D diffraction patterns with preferred orientation?
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