[Ifeffit] Questions about fitting of EXAFS

[Fuxiang Zhang]

Hi, Everyone,
I have several detailed questions about EXAFS processing and fitting
1. Are there any physical meaning for DeltaE0 in the paths, why it should
be less than 10eV
2. The cutting range of Kmax (FT transform parameters) has great effect on
FTs of EXAFS, how do I know to use the best value of Kmax;
3. How to make refinement equation for multi-scattering paths?
Such as in NiFe alloys (simple fcc structure), the path [Ni-FM-3m] Fe1.1
Ni1.4 Fe1.1., I use 0.67*Efe+0.33*Eni for DeltaE0, and
0.67*ssFe1+0.33*ssNi4 for sigma2, is that right?
Many thanks

Fuxiang Zhang
___
Ifeffit mailing list
Ifeffit@millenia.cars.aps.anl.gov
http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

[Ifeffit] Reference spectra for brookite, anatase, rutile, Amorphous TiO2 at Ti K-edge

[Samy Ould-Chikh]

Dear,

I received some data at Ti K-edge to analyse.
The spectra corresponds to samples which are different mixture of titania 
allotropes.
I started to do standard EXAFS fitting, but it doesn't seem relevant in this 
case.

Probably, an attempt to do linear combination fitting with brookite, anatase, 
rutile, and amorphous titania references will be more useful.
Unfortunately, the set of data I was given do not include those standards.

Is there anyone who have the spectra corresponding to those titania compounds 
and willing to share with us the raw data ?
If yes, would you mind to provide also the citation I should you use to 
acknowledge those standards ?

Many thanks for your kind help.

Best Regards,
Samy Ould-Chikh

KAUST Catalysis Center
Bldg.3,Level 4, #4231
4700 King Abdullah University of Science & Technology
Thuwal 23955-6900
Kingdom of Saudi Arabia

Tel: +966 12 8084486
E-mail: samy.ouldch...@kaust.edu.sa
Website:  http://kcc.kaust.edu.sa/Pages/Home.aspx















This message and its contents including attachments are intended solely for the 
original recipient. If you are not the intended recipient or have received this 
message in error, please notify me immediately and delete this message from 
your computer system. Any unauthorized use or distribution is prohibited. 
Please consider the environment before printing this email.

___
Ifeffit mailing list
Ifeffit@millenia.cars.aps.anl.gov
http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit