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