To follow up on Edmund’s comment, tin has a few different (and pretty
distinct) crystalline phases. I think neither “white” nor “grey” tin has a
near neighbor distance below 2.5 Ang. I don’t recall the structure of the
other phase.
Tin is slightly complicated for a reference material.
--Matt
Dear A, I think you are trying to fit a peak which shouldn't be there. If
you call 1. 8 to 3. 5 higher R space I think you are trying to fit an
artifact of the FT. You should try and go back to the background
subtraction etc. Cheers, Edmund -----
ZjQcmQRYFpfptBannerStart
*This Message Is From an External Sender *
This message came from outside your organization.
ZjQcmQRYFpfptBannerEnd
*From: *Welter, Edmund via Ifeffit
*Date: *Thursday, February 13, 2025 at 8:51 AM
*To: *XAFS Analysis using Ifeffit
*Cc: *Welter, Edmund
*Subject: *[Ifeffit] Re: Artemis: Rejects first shell fitting
Dear A,
I think you are trying to fit a peak which shouldn't be there. If you
call 1.8 to 3.5 higher R space I think you are trying to fit an
artifact of the FT. You should try and go back to the background
subtraction etc.
Cheers,
Edmund
----- Original Message -----
From: "XAFS Analysis using Ifeffit"
To: "XAFS Analysis using Ifeffit"
Cc: avijay@ethz.ch
Sent: Thursday, February 13, 2025 3:45:52 PM
Subject: [Ifeffit] Re: Artemis: Rejects first shell fitting
Hello!
I was trying to fit the Sn foil reference .
As a side note, I did check another literature (DOI
10.1149/2.0091412jss) who also fit the data between higher R space:
1.8 and 3.0 (3.5) Å, which I think is similar to my attempt at the
fitting where the Sn1.1 and Sn1.2 at lower R were excluded from the
fit to get a meaningful value of the parameters of the fit.
I appreciate the help!
Best,
A
ifeffit mailing list:
https://millenia.cars.aps.anl.gov/mailman3/lists/ifeffit.millenia.cars.aps.a...
to unsubscribe, send mail to ifeffit-leave@millenia.cars.aps.anl.gov
