Published March 23, 2005
| Version v1
Journal article
High pressure x-ray absorption spectroscopy at lower energy in the dispersive mode: application to Ce and FePO4
- 1. Physique des Milieux Condenses, CNRS UMR 7602, Universite Pierre et Marie Curie, 140 rue de Lourmel, 75015, Paris (France)
- 2. Synchrotron Soleil L'Orme des Merisiers, BP48-Saint-Aubin, F-91190, Gif sur Yvette (France)
- 3. Laboratoire des Geomateriaux, Universite de Marne la Vallee, F-77454 Marne la Vallee cedex 2 (France)
Description
X-ray absorption spectroscopy (XAS) using a diamond anvil cell has been extended to lower energies (below 6 keV) thanks to smaller diamond anvils and to a new acquisition set-up on the energy dispersive x-ray absorption beamline of LURE. The valence change of Ce with pressure is followed at the LIII edge of cerium up to 8 GPa together with the bond length variation during the same experiment. The pressure induced coordination change around the Fe atom in FePO4 is determined at the Fe K edge through the pre-edge feature behaviour, the XANES modification and the Fe-O bond length increase
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/17/S883/cm5_11_018.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/17/S883/cm5_11_018.pdf; http://www.iop.org/;
- DOI
- 10.1088/0953-8984/17/11/018;
- PII
- S0953-8984(05)92804-X;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 17
- Journal Issue
- 11
- Journal Page Range
- p. S883-S888
- ISSN
- 0953-8984
- CODEN
- JCOMEL
Conference
- Title
- 2. international symposium on the physics of solids under high pressure using nuclear probes
- Dates
- 22-25 Jul 2004
- Place
- Cologne (Germany)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36035276
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; ATOMS; BOND LENGTHS; CERIUM; CERIUM PHOSPHATES; DIAMONDS; IRON PHOSPHATES; KEV RANGE; PRESSURE RANGE GIGA PA; VALENCE; VARIATIONS; X RADIATION; X-RAY SPECTROSCOPY
- Descriptors DEC
- CARBON; CERIUM COMPOUNDS; DIMENSIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY RANGE; IONIZING RADIATIONS; IRON COMPOUNDS; LENGTH; METALS; MINERALS; NONMETALS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PRESSURE RANGE; RADIATIONS; RARE EARTH COMPOUNDS; RARE EARTHS; SPECTROSCOPY; TRANSITION ELEMENT COMPOUNDS