[Ifeffit] FEFF calculation for two inequivalent absorbing sites

2015-04-09 Thread Eugenio Paris
Hello everybody, I'm trying to make Co K-edge EXAFS fitting for the Co3O4 compound (*.cif file is attached). The nearest neighbour of Co is oxigen at about 1.93 Angstrom distance. Cobalt sits in two inequivalent sites in the unit cell. When I perform the FEFF calculation in Artemis for either one

[Ifeffit] polarization on FEFF calculation

2015-05-24 Thread Eugenio Paris
Dear all, i have a question about polarization vector in performing the FEFF calculation in Artemis. I am studying the system CeOBiS2 using Bi L3-edge EXAFS. Starting from *.cif file i'm creating the *.inp file which atoms list come out as follows: ATOMS * this list contains 35

Re: [Ifeffit] polarization on FEFF calculation

2015-05-24 Thread Eugenio Paris
:00 Matt Newville : > Eugenio, > > > On Sun, May 24, 2015 at 5:26 AM, Eugenio Paris > wrote: > >> Dear all, >> >> i have a question about polarization vector in performing the FEFF >> calculation in Artemis. >> I am studying the system CeOBiS2 using B

Re: [Ifeffit] polarization in Artemis

2015-05-25 Thread Eugenio Paris
Well, looks like i'm raising a nice discussion :) Summarizing, if I understood well at the present moment the effect of polarization is not included in Artemis analysis. However, going back to my scientific problem i think that the main contribution will come from the 4 in-plane S atoms, so as a fi

[Ifeffit] EXAFS signal from dopant atoms

2015-09-17 Thread Eugenio Paris
e signal-to-noise ratio? I mean, as "x" decreases I think there must be a leaking out of the EXAFS signal, should this effect be introduced in S0^2? Or can it affect the effective number of neighbors? Hope I explained myself, thank you! Eugenio