I'm trying to refine by Rietveld Method a Al2O3-AlNbO4-NaNbO3 system, and I'm having some problems with a reflection on 44-45 2theta. I've used all CIF files of AlNbO4 that I could find, but I'm still not refining this reflection (or maybe more than one reflection) properly.
Can anybody tell me what is wrong? Or give me a hint to get a perfect refinement of this reflection?
By the way, using Popa Rules could not help me neither.
Thank you very much.
Geoffrey Tse
Is this the structure you want ? (see CIF) this is coming from:
http://www.nanocrystallography.org/cif/4/32/26/4322626.cif
I also enclose the relevant document here (see PDF), since the structure you want exists in different forms, this is coming from:
http://arxiv.org/pdf/0708.0673
Hope this helps.
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