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
Dear list members,
I'm a beginner in XRD and now trying to estimate the instrumental broadening.
My final goal is to measure crystallite size and microstrain of minerals.
The equipment I've is Bruker D8 discover with GADDS(2D detector) and XYZ
stage. I know this is not a setup for high resolu
Dear Jin Peng,
The uncertainties for the lattice parameters (and all the other fitted
parameters) are in the LST file (list file). They are shown as separate
numbers for the lattice parameters and the uncertainties, like so:
13.88843 13.88843 6.53524
0.000350.00035
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
Wing,
This is something which has also been playing on my mind recently - you are not
alone. I don't believe NIST has made LaB6 for a long time. I could use some
more to supplement my dwindling supply, so I bought some LaB6 from Aldrich with
a view to processing and annealing it, but I can'
Another good line profile standard is NAC (Na2Ca3Al2F14).
It's been discussed on the list long ago where one can get this material:
http://www.mail-archive.com/rietveld_l@ill.fr/msg01824.html
But (facing the same problem with unavailability of LaB6 from NIST), if
somebody could propose a good a
