Re: Peak assymtery not able to fit

Apu, I would try bimodal distribution of crystallite sizes: in fullprof you can use two phases with the same structure and different peak shape and broadening. Regards, Patrick Patrick Weisbecker

Re: Quantitative phase analysis on FullProf

You should make a first refinement with ATZ=0 for both phases, and let the value that the software has calculated.  Be carefull, the first atom site must be fully occupied. Patrick De : Kotaro SAITO kotaro.sa...@kek.jp À : Rietveld_l@ill.fr Envoyé le : Mardi 24 février 2015 11h52 Objet 

Re : Réf. : calcul of a vector indices

Dear Teresa, You could use Carine Cristallography, it provides miller indices of a direction by clicking on atoms. http://pagespro-orange.fr/carine.crystallography/ Regards Patrick Weisbecker LCTS-PESSAC France De : Habib Boughzala habib.boughz

Re : Re : HT XRD calibration

Hi Alex, May be  we worked with the same furnace: Inel? I had also the same problem and solved it by making a new sample holder with a smaller thermocouple placed on the side of the sample holder. Patrick Patrick Weisbecker LCTS - Pessac   - Message d'origine De : Yokochi

Re : HT XRD calibration

Hi, One way to get rid of the temperature uncertainty is to introduce a second thermocouple inside the furnace and to fix it as close as possible from the sample. If the sample is a bulk sample:Drill a hole inside the sample and put the thermocouple inside the hole and if the the sample is

Re : Introduction and Unit cell parameter determination

It is indeed advisable to start with an internal standard to check that there is no instrumental error or sample position issue (sample displacement is the more common cause of peak shift). Silicon powder is often used as a standard, a standard reference material (SRM) is sold by the NIST

Re: about profile shape functions

, create your own public profile at http://profiles.msn.com. Patrick Weisbecker LSG2M Ecole des Mines de Nancy Parc de saurupt 54042 Nancy email

Strutural datas for tau phases

. Patrick Weisbecker LSG2M Ecole des Mines de Nancy Parc de saurupt 54042 Nancy email: [EMAIL PROTECTED]

Re: Strain and size determination by peak shape analysis

Hi Hugues, I'm not a specialist in this field but I know that WinFit (Stefan Krum, institut fur Geologie) is well suited for size and strain determination; you can download it at : http://www.geol.uni-erlangen.de/html/software/winsoft.html I can advise you an article : Voigt-Function

Lattice parameter of silicon in temperature

Hello, Does someone has got accurate measurement of lattice parameter of Si in the range 290°K-1300°K? Thanks by advance.

structure factors calculation

come from? Which software is the more reliable? Patrick Weisbecker Laboratoire de Science et Genie des Materiaux metalliques Ecole des Mines de Nancy e-mail: [EMAIL PROTECTED]

Re: New member of the rietveld e-list

refine U and Y, if it doesn't work try several values of Y and refine U. Moreover check that you don't have anisotropic broadening. Best regards, Patrick WEISBECKER. Laboratoire de Science et Genie des Materiaux metalliques. Ecole des Mines de Nancy Dear Edouard, You can try