Hi,
my background is in single-crystal X-ray diffraction. Now, I am carrying out the so-called Rietveld refinements in GSAS-II and am getting quite large _refine_ls_shift/su_max values (ranging from 0.02 to 0.6) which cause alerts in checkcif. I know what to expect for a refinement of crystal structure against single-crystal diffraction data but do not know what are typical and acceptable values for Rietveld refinement. Can you tell me your experience?
Cheers,
Piotr