Dear Darin,
Darin Hoffman wrote:
To
any one that can help:
I am performing a rietveld refinement using GSAS on x-ray data of a rod
material. I have thus far been able to make a good fit by simply
attaining the Particle size and strain broadening. The data so far
matches close to what
Reference to PSF #4 by P. Stephens is J. Appl. Cryst. (1999). 32, 281-289.
Peter Y. Zavalij
University Crystallographer
Institute for Materials Research
and Chemistry Department
Binghamton University, SUNY, Vestal Pkwy, East
Binghamton, NY 13902-6000, USA
Tel: (607)777-4298Fax: (607)777-4623
The approach you use describes anisotropy of the peak broadening in ellipsoidal
approximation and it is not strange that fit is
improved. The question is how adequate the model is. You may also try PSF #4.
There was a lot of discussion recently on this list about the anisotropic broadening
and pe
To any one that can help:
I am performing a rietveld refinement using GSAS on x-ray data of a rod
material. I have thus far been able to make a good fit by simply attaining
the Particle size and strain broadening. The data so far matches close to
what I expect. I am using the type 2 pseudo-Vo
