Hi,
May I ask what is the exact formula used
by rawplot refinement? There are 6 parameters: pos, int, alp, bet, sig,
gam, what are their meanings? If i want to compare the changes of a peak at
different banks or different temperature, what is the most important
parameter?
Thanks:)
Ling Y
Dear all,
I have some questions concerning the refinement of
the gppd data and would appreciate your advice:
1) The patterns show some kind of texture(up and
down on the error curve), but the sample is powder(although maybe the granules
are large) and should be isotropic. All banks show thi
covered in book
"Fundamentals
of Powder Diffraction and Structural Characterization of
Materials" by V.K.Pecharsky & P.Y.Zavalij. Kluwer Academic Publishers, Spring
2003. (www.amazon.com, www.wkap.nl)
Peter Zavalij
-----Original Message-From: ling yang
[mailto:
I have the same question, so post his question here:
Dears all,
In the structural refinement of ABO3 type, e.g. A1-xCxB1-yCyO3 using GSAS.
The dopant (atom C) may be occupied two atomic sites, A and B. Therefore the
occupancy constraint should be considered. In order to perform the
structural refin
Dear Rietveld users,
I have some difficulty to refine a structure. A double-lattice
superstructure is suppose to superimpose on the orginal one, the lattice length
is slightly deviated. But when I tried to do this, the refinement is poor even
after I fix the fraction of the 2nd phase to be
to build a lattice? It will be better if they are colorful and flexible to
change the bond angle.
Thanks.
Sincerely,
Ling YangDept of CME, Univ of CincinnatiCurrent address:Bldg
8600, MS 6474SNS, Oak Ridge National LaboratoryOak Ridge, TN
37830Tel: 865 574 0350Fax: 865 241 5177
Dear all,
Are there anybody experienced in stacking faults? Please help me!
Basically I'm following Warren's book and R. Berliner's paper to simulate
the possible effects of stacking faults on diffraction patterns. I did generate
a set of patterns for fcc, but there are some questions I'm
Usually you have to modify the file a little bit, or just rewrite one. Every
software is different. Read the manual.
Sincerely,
Ling Yang
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 25, 2006 6:30 PM
To: rietveld_l@ill.fr
Hi,
I am trying to
I extract the data and plot all the curves myself in Origin:)
You may find it's much easier to control in this way, and the file can be
saved for later revise, although it takes time.
Sincerely,
Ling Yang
-Original Message-
From: Luca Lutterotti [mailto:[EMAIL PROTECTED]
For example, Uiso>0, 0
thanks.
Sincerely,
Ling Yang
-Original Message-
From: Von Dreele, Robert B. [mailto:[EMAIL PROTECTED]
Sent: Thursday, May 03, 2007 5:26 PM
To: rietveld_l@ill.fr
Subject: new gsas
Hi All,
New versions of GSAS for Windows and Fedora-5 have been placed on the CCP14
web server. The changes are as
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