Synchrotron studies on silicon clathrates: Highly stable nanostructured materials. - Université Pierre et Marie Curie Accéder directement au contenu
Article Dans Une Revue Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Année : 2005

Synchrotron studies on silicon clathrates: Highly stable nanostructured materials.

Résumé

We have pushed the limits of X-ray absorption spectroscopy under high pressure in order to study the stability of the Ba intercalated silicon clathrate. EXAFS experiments at the Ba K-edge have been performed in the step by step mode up to a pressure of 14.5 GPa using the Paris–Edinburgh cell with sintered diamond anvils. XANES experiments at the Ba L-III edge were done in an energy dispersive set-up using hollowed diamond anvil cells up to a pressure of 20 GPa. Combining the obtained results with high pressure X-ray diffraction we demonstrate the high stability of the Ba intercalated silicon clathrates. Our conclusions could be extended to other clathrate systems.

Dates et versions

hal-00021504 , version 1 (22-03-2006)

Identifiants

Citer

A. San-Miguel, Pierre Toulemonde, A. Merlen, B. Masenelli, F. Tournus, et al.. Synchrotron studies on silicon clathrates: Highly stable nanostructured materials.. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2005, 238, pp.163-166. ⟨10.1016/j.nimb.2005.06.040⟩. ⟨hal-00021504⟩
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