I try multiple k-weights refinments with ARTEMIS of Al K EXAFS of ternary aluminium and titanium nitrides films. This system is rather disordered and textured with large grain boundaries that contribute to EXAFS. Consequently only few parameters can be varied simultaneously. I think that the k**3 weighting plays the major role in the multiple k-weights calculation. There is no great dfference between the results of k**3 weight and multiple k-weights fits. Best regards Marie-Hélène Tuilier Laboratoire MMPF (Mécanique, matériaux et Procédés de Fabrication) Pôle STIC-SPI-Maths, Université de Haute Alsace, IUT de Mulhouse, 61 rue Albert Camus, F-68093 Mulhouse Cedex Tel : 33 (0)3 89 33 75 16 Fax : 33 (0)3 89 33 75 05
Hi Marie,
On 4/13/07, marie-helene.tuilier@uha.fr
I try multiple k-weights refinments with ARTEMIS of Al K EXAFS of ternary aluminium and titanium nitrides films. This system is rather disordered and textured with large grain boundaries that contribute to EXAFS. Consequently only few parameters can be varied simultaneously. I think that the k**3 weighting plays the major role in the multiple k-weights calculation. There is no great dfference between the results of k**3 weight and multiple k-weights fits.
Hmm, there should be some difference, though it's certainly possible that the differences would be small. I would expect N, Al, and Ti scatterers to have different importance in k^1, k^2, and k^3 weighting. To say much more would depend on the details of your data -- especially the k and R ranges used in the fit. Perhaps posting a project file would clarify the issues? --Matt
participants (2)
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marie-helene.tuilier＠uha.fr -
Matt Newville