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dc.contributor.authorYAGOUBI Sen_GB
dc.contributor.authorHEATHMAN Stephenen_GB
dc.contributor.authorSVANE A.en_GB
dc.contributor.authorVAITHEESWARAN G.en_GB
dc.contributor.authorHEINES P.en_GB
dc.contributor.authorGRIVEAU Jean-Christopheen_GB
dc.contributor.authorLE BIHAN T.en_GB
dc.contributor.authorIDIRI M.en_GB
dc.contributor.authorWASTIN Francken_GB
dc.contributor.authorCACIUFFO Robertoen_GB
dc.date.accessioned2014-03-01T01:02:28Z-
dc.date.available2012-12-31en_GB
dc.date.available2014-03-01T01:02:28Z-
dc.date.created2012-10-16en_GB
dc.date.issued2013en_GB
dc.date.submitted2011-07-25en_GB
dc.identifier.citationJOURNAL OF ALLOYS AND COMPOUNDS vol. 546 p. 63-71en_GB
dc.identifier.issn0925-8388en_GB
dc.identifier.urihttp://www.sciencedirect.com/science/article/pii/S0925838812013023en_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC66072-
dc.description.abstractThe actinide silicides ThSi, USi and USi2 have been studied under high pressure using both theory and experiment. High pressure synchrotron X-ray diffraction experiments were performed on polycrystalline samples in diamond anvil cells at room temperature and for pressures up to 54, 52 and 26 GPa, for ThSi, USi and USi2, respectively. At ambient conditions, the uranium silicides crystallize in tetragonal structures (space groups: I4/mmm for USi and I41/amd for USi2), while ThSi adopts an orthorhombic structure (space group: Pbnm) (including an anharmonic analysis of the silicon). These structures are found to be stable with no structural transitions observed up to the highest pressures achieved. The zero-pressure bulk modulus B0 and its pressure derivative B0’ at ambient pressure are obtained from the measured P-V relations. The experiments are accompanied by first principles calculations using the full-potential linear muffin-tin orbital method within the generalized gradient approximation for exchange-correlation effects. Experimental results are well reproduced by the calculated equation of state and ground state properties.en_GB
dc.description.sponsorshipJRC.E.6-Actinide researchen_GB
dc.format.mediumPrinteden_GB
dc.languageENGen_GB
dc.publisherELSEVIER SCIENCE SAen_GB
dc.relation.ispartofseriesJRC66072en_GB
dc.titleHigh Pressure Studies on Uranium and Thorium Silicide Compounds - Experiment and Theoryen_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doihttp://dx.doi.org/10.1016/j.jallcom.2012.07.094en_GB
JRC Directorate:Nuclear Safety and Security

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