Hi Rafat, The XASDB has HfO2​ spectra from Bruce Ravel (BMM beamline). If you go to About > Other databases, you will see other sources that might have what you are looking for. If you find any good Hf spectra outside of these databases, I would be happy to add them to XASDB. Cheers, Denis Denis Spasyuk, PhD Industrial SM and MX Crystallography Canadian Light Source Inc. 44 Innovation Blvd. Saskatoon, SK S7N 2V3 Phone: +1 306-657-3670 ________________________________ From: Rafat Hossain Aunkon via Ifeffit Sent: Monday, April 6, 2026 10:28 AM To: ifeffit@millenia.cars.aps.anl.gov Cc: Rafat Hossain Aunkon Subject: External: [Ifeffit] Request for Hf Reference XAS Data Hello everyone. I am writing to inquire whether Hf reference XAS data may be available to anyone. As I am working on one of my projects on Hf-doped CaF2 nanoparticles. I am currently looking for reference data that would support qualitative ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd Hello everyone. I am writing to inquire whether Hf reference XAS data may be available to anyone. As I am working on one of my projects on Hf-doped CaF2 nanoparticles. I am currently looking for reference data that would support qualitative comparison and interpretation of the Hf edge spectra. In particular, I am seeking reference data for: Hf foil and HfO2 If reference data for Hf fluoride compounds are also available, those would also be very helpful. If anyone has such data and would be willing to share them, I would greatly appreciate it. Thank you. Sincerely, Rafat Hossain Aunkon Graduate Student, Stony Brook University Department of Materials Science and Chemical Engineering Structure and Dynamics of Applied Nanomaterials Group Brookhaven National Laboratory -- Rafat Hossain Aunkon Graduate Student, Stony Brook University Department of Materials Science and Chemical Engineering Structure and Dynamics of Applied Nanomaterials Group Brookhaven National Laboratory