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Unité Matériaux et Transformations
CNRS UMR 8207 - Université de Lille

UMET - High Pressure On Large Scale Facilities

Diamond anvil cell

The expertise of the Earth and Planetary Materials group for the study of materials and minerals under extreme conditions of pressure and temperature relies on mainly two techniques: diamond anvil cell and large volume press experiments, as well as advanced chararcterization techniqes involving X-ray sources at large scale facilities.

 

Large scale facilities

Aerial view of the SOLEIL synchrotron. C. Kermarrec - SOLEIL — Synchrotron SOLEIL, GFDL, Wikipedia.
Aerial view of the SOLEIL synchrotron. C. Kermarrec - SOLEIL — Synchrotron SOLEIL, GFDL, Wikipedia.

Large scale research facilities are national or international centers dedicaed to experiments that would not be viable in smaller laboratories. For high pressure reseach, light sources such as synchrotrons are particularly useful as they provide intense and well-focused radiation that can be used for in-situ measurements, while the sample is under extreme conditions of pressure and temperature.

In our work, we mostly use the following sources:

 

High Pressure devices on large scale facilities

Multi-anvil press experiment on the ID06 beamline at ESRF.
Multi-anvil press experiment on the ID06 beamline at ESRF.
Diamond anvil cell experiment on the ID27 beamline at ESRF.
Diamond anvil cell experiment on the ID27 beamline at ESRF.
A resistively-heated diamond anvil cell on the P02.2 beamline at PETRA III.
A resistively-heated diamond anvil cell on the P02.2 beamline at PETRA III.
Laser heating system on the P02.2 beamline at PETRA III.
Laser heating system on the P02.2 beamline at PETRA III.

Diamond anvil cells, Paris-Edinburgh, and multi-anvil presses are often installed on dedicated beamlines with the matching measurement, heating, and positioning systems. Those beamlines also provide environements allowing the users to prepare their sample prior to the experiment.

Types of measurements

Deformation measurements on a synchrotron. Radiography and diffraction are used to quantify deformation, stress, and sample texture.
Deformation measurements on a synchrotron. Radiography and diffraction are used to quantify deformation, stress, and sample texture.
Multigrains diffraction in a diamond anvil cell. In-situ and grain by grain tracking of the evolution of a sample's microstructure.
Multigrains diffraction in a diamond anvil cell. In-situ and grain by grain tracking of the evolution of a sample's microstructure.

In our case, we mostly use large scale facilities beamlines producing x-rays with which we perform diffraction, radiography, and tomography. We study the physical properties of our samples, their crystallographic structures, microstructure, or plastic properties.

Sample contributions

 
UMET - Unité Matériaux et Transformations
CNRS UMR 8207
Université de Lille
Bâtiment C6
59655 Villeneuve d'Ascq
France
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