Very basic question 1) How can instrumental broadning be determined. what we have been taught is take a full scan of silicon standard from 25 to 130 degrees...
Hi, ... Recurrent question... You could find many anwers at the Rietveld mailing list archive : http://pcb4122.univ-lemans.fr/forum/rietveld_l/index.html ...
hi reza..ya it is elementry quetion..it means arbitray unit (a.u.) kuldeep phd student Met & Mat Engg. indiain institute of technology Roorkee india ... From:...
Dear all, I tried to refine a spectra that teorically should be cubic, but whem I started the refinement just one peak (111) is missing on teorical fitting,...
What is the space group? best Radovan ... -- Radovan Cerny Laboratoire de Cristallographie 24, quai Ernest-Ansermet CH-1211 Geneva 4, Switzerland Phone :...
I'll try to be more clear. The space group is Pm-3m. When I start to refine with this space group all peaks but one in teorical difractogram comes out. The...
And what is the tetragonal space group which gives good intensity? Radovan ... -- Radovan Cerny Laboratoire de Cristallographie 24, quai Ernest-Ansermet ...
Hi, Higor: i hope i have understood your situation... i came across the similar problem. Fortunately, Prof. Gottschalk told me the right way. Please see the...
Lujun@EKM
jun.lu@...
Oct 22, 2008 10:37 am
2255
The problem you had was the wrong choice of the origin with respect to the numerical values of the atomic coordinates you had. That's a typical error in the...
I think that your problem is in oxygen position. It should be 1/2 1/2 0. Another typical error. Measure two times before you cut (a Czech proverb ) ... Best...
After a simple try, i think it's resonable. Before, O(0.5, 0, 0) was strange and i could not construct proper Ti-O octahedrons. a short suggestion to the...
Lujun@EKM
jun.lu@...
Oct 22, 2008 1:01 pm
2260
hi to all can anyone suggest how the density measurements can be done of the powder samples... as...
Hi, For density measurements of powders you can use a glass pycnometer, or a helium pycnometer (more accurate). I am also interested in the density values of 2...
Hi all I have a very basic question. If suppose the positions of the atoms in the unit cell is given like Mn 16d (5/8,5/8,5/8); Li 8a(0,0,0); O 32e(x,x,x), Is...
Hi, ... That is written in the international tables for crystallography. Alternatively, the Bilbao crystallographic server lists Wyckoff positions and their...
Vincent Favre-Nicolin
vincefn@...
Oct 23, 2008 8:56 pm
2264
Dear collegues, I need standart Mg2Ni data file with txt format. I you have any information how can I find please send me an e-mail. Regards, Hakan [Non-text...
Hi, I am presently using crysfire program for indexing. In off screen files .tro format file will be created only for some molecules,but not for all.What may...
Dear All I am searching for the atomic position and unit cell for the crystal Mg2V2O7 monoclinic Thank you Hamid [Non-text portions of this message have...
... There is one in the COD (Crystallography Open Database): Formula : - O 7.00 Mg 2.00 V 2.00 - Comments : Mg2V2O7 Nielsen U G Jakobsen H J Skibsted J Norby P...
I developed a compound of general formula AB2 (PO4) 3 space group P2 / m. I seek the atomic position compound to introduce in the PCR.  a         ...
hello you must define elements A and B and than you could doing a search in CIF file via the following website: www.crystallography.net   ... De: ben...
Hi, the cif file does not exist in this website:www.crystallography .net If the compound is new, how I can determine the atomic position of this compound? ...
... Different ways and software. Visit the open SDPD Internet Course to have an overview and exercises : http://sdpd.univ-lemans.fr/DU-SDPD/ See also the SDPD...
Dear All, HAPPY NEW YEAR! Those of you who have extensively used X’PERT PRO PANalytical XRD diffractometer for materials characterization such as texture,...
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