[Ifeffit] question about Eo and simultaneous fitting

Scott Calvin SCalvin at slc.edu
Wed Feb 14 09:55:12 CST 2007


Hi Shelly,

Interesting--I've never tried that method with samples that I expect 
to differ in oxidation state. If it's differing in oxidation state, 
the local environment is probably different too...particularly, 
nearest-neighbor distances should be changed significantly. So how do 
you align the chi(k) data with each other, when they oscillate at a 
different frequency?

--Scott Calvin
Sarah Lawrence College

At 10:38 AM 2/14/2007, you wrote:

>The approach that I like to take, is to vary the choice of E0 in the
>background subtraction step so that the chi(k) spectra are well aligned
>with each other and the theory.  Then only one Ezero parameter is
>needed.
>
>Cheers,
>Shelly




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