A chemical pure Y2O3 powder sample was sintered at
1400°C for 72 hours. The analysis of remaining size/microstrain was
carried out using raytraced plus tube tails corrected FPA lines.
The XRD 3000 TT diffractometer was operated with a Cu long fine
focus tube, fixed divergence slits, primary beam soller collimator, 0.2 mm
receiving slit and a curved secondary beam graphite monochromator. This
geometry results in a FWHM of 0.07 deg at 30 deg for the
Cu Kα1 part of the profile. Rwp=7.18%
was reached using a 4601 point scan with Rexp=5.77%.
Microstrain was estimated as being zero. The size broadening correspondents
to a mean crystallite size of 639(9) nm. This small
sample-caused broadening was used in the further computations.
