Re: [Ifeffit] Co2P spectrum

[Carlos Triana Estupinan]

 Dear XAFS community,

Does anyone have a spectrum of Co3(PO4)2 sample?

Thank you in advance.

El lun, 12 sept 2022 a las 21:54, Christian Wittee Lopes (<
chriswit...@gmail.com>) escribió:

> Dear XAFS community,
>
> Does anyone have a spectrum of Co2P sample or standard?
>
> Thank you in advance.
>
> Best,
>
> Christian Wittee Lopes
>
> --
>
> Christian Wittee Lopes
>
> Visiting Researcher - ANP/FINEP - PRH 50.1
>
> Institute of Chemistry, Universidade Federal do Rio Grande do Sul (UFRGS)
>
> chriswit...@gmail.com
>
> LinkedIn 
> | ORCID  | Lattes
> 
>
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-- 
__
Phd. - Lic.Phil. - Msc. & Bsc. in Sciences Physics
Senior Researcher, University of Zurich
Department of Chemistry
Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
Email: carlos.tri...@chem.uzh.ch
Phone:  +41 44 63 54 646
Movil: +41 076 814 41 60

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[Ifeffit] Co K-edge XAS spectra of Co(OH)2 and CoOOH

[Carlos Triana Estupinan]

Dear mailing list,



I am looking for the Co K-edge XAS spectra of Co(OH)2 and CoOOH containing
both the XANES and EXAFS regions at room temperature.



Thank you in advance.



Kind regards,
-- 

*Carlos A. Triana*
PHD. - LIC.PHIL. Sciences Physics
MSC.*-* BSC. Sciences Physics
Postdoctoral research fellow
University of Zürich
Switzerland
TEL: +41 076 814 41 60
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[Ifeffit] Inversion Degree

[Carlos Triana Estupinan]

Dear
All

Dear

I have EXAFS spectra for spinel Co3O4, and I have to determine the
inversion degree X, or the cation distribution of Co at the octaedral and
tetraedrical sites.

The EXAFS fitting can be performed employing two clusters of atoms, one
having the absorbing atom in tetrahedral site and one having the absorbing
atom in octahedral site. However, I do not know how to exactly determine
the fraction of cations in octahedral or tetraedral sites from fitting the
spectra with two sites independently.

Could you please tell me how exactly should I proced, can I define a EXAFS
fitting parameter giving me the cation distribution of Co at the octaedral
and tetraedrical sites. If so, how can I do it.

Thanks and best regards,

-- 

*Carlos Augusto Triana Estupiñan*
* M.Sc. Sciences - **Physics*
*Physicist*
* Tel: +57 322 256-2309*
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[Ifeffit] Amorphous

[Carlos Triana Estupinan]

Dear
Bruce

I want to know if it is possible to obtain a 3D structure (.cif file) of an
amorphous material from the EXAFS fitting carried out from artemis. I mean,
there is a way to extract a .cif file with the structural data obtained
from the refined spectra. Also, in amorphous materials there must be a
distribution of interatomic bond distances and coordination, and so, how
can I address such a structural distribitions.

Regards.
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