On Thu, 25 Mar 1999 09:42:50 -03-30, Roger Mason wrote:
>Hi,
>
>I am interested in doing Rietveld work on layer silicates (especially
>pyrophyllite at the moment). I anticipate that there may be some problems
>in dealing with stacking disorder and different kinds of ordered stacking
>sequences when developing a structural model for analysis.
>
>Being new to Rietveld I am wondering if anyone has worked on this problem.
Have a look at:
J. Bergmann and R. Kleeberg
Rietveld Analysis of Disordered Layer Silicates
Proceedings of EPDIC 5
(5th European Powder Diffraction International Conference,
Parma, Italy, May 25-28 1997)
Materials Science Forum 278-281 (1998) part 1 pp. 300-306
R. Kleeberg frequently does quant analyses of samples containing layered
silicates. They commonly shows b/3 stacking faults and related disorder.
Therefore, I have designed two special real structure models for use within the
Rietveld program BGMN (see http://www.bgmn.de).
Originally, I have designed real structure models for Chlorite
and Kaolinite. But R. Kleeberg has successfully used them for some more
layer silicates.
Sincerely yours
J. Bergmann
[EMAIL PROTECTED]
