RE: turbostratic carbon

2006-08-22 Thread ruggeri
done Rietveld on it, but check out: V. Petkov, R. G. DiFrancesco, S. J. L. Billinge, M. Acharya and H. C. Foley, Local structure of nanoporous carbons, Philos. Mag. B 79, 1519 (1999). for a real-space refinement. I can send you a copy if you can't get hold of it yourself. Best regards,

turbostratic carbon

2006-08-22 Thread ruggeri
Hello all, Has anybody tried to refine turbostratic carbon with GSAS? In the literature, the main peaks observed are the 002, 100, 004 and 110 lines. If yes, what Pearson symbol is recommended for the refinement? Regards. turbo-carbon.dat Description: Binary data

Fe3N P312 space group 149 space gfroup number

2006-07-12 Thread ruggeri
Hello all, Can anybody help me for the position of the atoms in the lattice for Fe3N phase : P312 space group or 149 space group number ? I found the informations in ASM handbook for the other phase P63/mmc but I cannot find P312. Thanks in advance. Stéphane Ruggeri, Ph.D. Stagiaire post

RE: Crystal size in GSAS

2006-06-29 Thread ruggeri
Hello, I am trying also to calculate crystal size from GSAS, and I want to find back the fwhm of all the peaks from their position: how is it possible? Thanks Stéphane Ruggeri, Ph.D. Stagiaire post-doctoral INRS Énergie, Matériaux et Télécommunications 1650, boul. Lionel-Boulet Varennes (Québec