I am working in Rietveld and powder structure determination
of the nano Al2O3 particle (about 30nm). Owing to broad, complex pattern it
is very 
difficult to interpret various phases(alpha, gamma, delta and so on).
The question is; is it possible to refine structure using the Rietveld method 
though particles are nano?  If possible how can it massage?  
I am very happy if  anyone could inform me of  the size effect on Rietveld
analysis. 
		
Thanks in advance
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Dr. Hyun Min Park                                           
Materials Evaluation Center,                                  
Korea Research Institute of Standards and Science 
P.O. BOX 102, Taejon 305-600, Korea 	           
(TEL)   +82-42-868-5277,5293
(FAX)   +82-42-868-5032
(Email)  hmpark@krissol.kriss.re.kr
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