[Ifeffit] question about Eo and simultaneous fitting

[Scott Calvin]

Hi Tony,

A quick answer before I try to fight my way through an ice storm to 
get to work. :)

Fitting the three spectra simultaneously makes sense, but if 
oxidation state is expected to be different, then you really need 
different E0's.

As far as doping, it depends on the details. In some cases, it may 
require a different E0's, in others, not. Of course, you can try it 
both ways, and see what the fits think.

--Scott Calvin
Sarah Lawrence College

At 05:04 AM 2/14/2007, you wrote:
>Hi,
>
>first I would like to thank all experienced  people answering in 
>this forum!! I have learned really a lot from you.
>
>And now my question:
>Should I fit EXAFS spectra of a doped material and the same 
>material, but oxidized and reduced (three spectra) simultaneously? 
>In my opinion: yes, as I am looking for small differences. Is 
>varying one Eo for the three samples the right approach?
>I am also wondering, should I vary one Eo for samples with different 
>doping concentrations?
>