December 2025 - Ifeffit - millenia.cars.aps.anl.gov

Query: abnormal FT-EXAFS peak at ~1.1A
by Huaming 24 Dec '25

24 Dec '25

Hello! I faced an issue with fitting of FT-EXAFS data (Rh@zeolite) with Artemis. There is one distinct peak located at ~1.1 angstron. The intensity is comparable to the nearby peak of Rh-O scattering. I wonder the peak (~1.1A) is a real peak or just noise. Raw data is enclosed. Another question is why S02 can be negative in data fitting with Artemis. Cheers, Huaming

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There are some issues with fitting FeNi DAC parameters using fdmnes.
by 1000566384＠smail.shnu.edu.cn 20 Dec '25

20 Dec '25

Hello! I am a graduate student. When using Fdmnes to fit FeNi DAC, I found that the fitted peaks do not match the experimental peaks very well. The main issue is that the two transition peaks in the experiment merge into a single peak in the fitted curve. First of all, thank you very much for your help. If you could help me adjust the parameters, I would be happy to send you the experimental data for you to take a look. Best of luck!

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Help for checking my EXAFS fitting
by cbmeherrem＠gmail.com 10 Dec '25

10 Dec '25

Hello, I am a graduate student working on Ge and Sn K-edge XAS measurements. I have performed some EXAFS fitting in Artemis, but I am not fully confident that my analysis is correct since my sample is a bit complex. I was wondering if anyone with expertise in EXAFS fitting might be willing to look over my results. I would be happy to email my fitting files and analyzed data if someone is available to provide guidance. Thank you very much for your time and help. Best Maharram

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