Jin, Make sure you refine a,b,c in the last refinement cycle. If you fix the at some points the error "bars" are gone.
Peter Zavalij X-ray Crystallographic Center University of Maryland College Park, MD 20742 Phone: 301-405-1861 From: Peng, Jin [mailto:jpe...@tulane.edu] Sent: Thursday, February 18, 2010 7:31 PM To: rietveld_l@ill.fr Subject: the error bars of lattice parameters using GSAS Hi, I am using the graphical interface of GSAS, EXPGUI, for the refinement, the problem is I can not find the error bars for the lattice constant a, b, c. I can find the error of band length and band angles under result - disagl. Where can I find the error bars for a, b and c? Thank you! Jin Peng Department of Physics, Tulane University New Orleans, LA, 70118
