Recent progress in high pressure X-ray absorption spectroscopy studies at the ODE beamline

ABSTRACT

High pressure energy-dispersive X-ray absorption spectroscopy is a valuable structural technique, especially, when combined with a nano-polycrystalline diamond anvil cell. Here we present recent results obtained using the dispersive setup of the ODE beamline at SOLEIL synchrotron. The effect of pressure and temperature on the X-ray induced photoreduction is discussed on the example of nanocrystalline CuO. The possibility to follow local environment changes during pressure-induced phase transitions is demonstrated for α-MoO${}_3$ based on the reverse Monte Carlo simulations.

KEYWORDS:

• High pressure
• nano-polycrystalline diamond anvil cell
• XANES
• EXAFS

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Andris Anspoks http://orcid.org/0000-0002-7174-175X

Alexei Kuzmin http://orcid.org/0000-0003-4641-6354

Additional information

Funding

I.J. and A.K. are grateful to the Latvian Council of Science project no. lzp-2018/2-0353 for financial support. The research leading to these results has been partially supported by the project CALIPSOplus under the Grant Agreement No. 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020.