[Ifeffit] Linear combination fitting

Kelly, Shelly Shelly.Kelly at uop.com
Tue Apr 7 08:37:43 CDT 2009

Hi Guven,

Wow that is amazing. Would you share your Athena project file with us?
I believe that it is possible but I'm a bit surprised that the numbers
flip so evenly. What happens when you increase the energy range on the
xanes fit so that it includes more of the EXAFS features?  And what
happens when you decrease the k-range and lower the k-range so that it
includes more of the xanes features?

Look at the unique parts of the spectra that belong to each component in
the xanes and chi spectra, that should help you see why the values are
coming out the way that they are.


> -----Original Message-----
> From: ifeffit-bounces at millenia.cars.aps.anl.gov [mailto:ifeffit-
> bounces at millenia.cars.aps.anl.gov] On Behalf Of Guvenc Akgul
> Sent: Monday, April 06, 2009 4:31 PM
> To: ifeffit at millenia.cars.aps.anl.gov
> Subject: [Ifeffit] Linear combination fitting
> Dear all,
> I have done Ti doped ZnO EXAFS data analysis but I guess it  is
> mixture structure at high concentration for example 55% Ti doped
> I done linear combination fit , but at  fitting space norm(E),ZnO
> is 0.779 and ZnTiO3 is 0.221 then I changed fitting space is chi(k)
> weight is getting 25.2 and ZnTiO3 is getting 74.8 and it is not same
> at fitting space norm(E) why?
> regards
> guven
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