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dc.contributor.authorKLIMCZUK TOMASZen_GB
dc.contributor.authorSHICK A.B.en_GB
dc.contributor.authorKHMELEVSKYI SERGEJen_GB
dc.contributor.authorKOZUB A. L.en_GB
dc.contributor.authorKOLINCIO KAMIL K.en_GB
dc.contributor.authorGRIVEAU JEAN-CHRISTOPHEen_GB
dc.contributor.authorCOLINEAU ERICen_GB
dc.contributor.authorELOIRDI RACHELen_GB
dc.contributor.authorCACIUFFO ROBERTOen_GB
dc.date.accessioned2019-01-12T01:08:28Z-
dc.date.available2019-01-10en_GB
dc.date.available2019-01-12T01:08:28Z-
dc.date.created2019-01-09en_GB
dc.date.issued2018en_GB
dc.date.submitted2017-11-27en_GB
dc.identifier.citationJOURNAL OF ALLOYS AND COMPOUNDS vol. 768 p. 852-858en_GB
dc.identifier.issn0925-8388 (online)en_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC109117-
dc.description.abstractA new neptunium intermetallic compound, NpPt2In7, has been synthesized in polycrystalline form and characterized by several macroscopic techniques. A Rietveld analysis of its powder X-ray diffraction pattern shows that NpPt2In7 crystallizes in a tetragonal lattice with I4/mmm symmetry and lattice parameters a= 4.58471 (3) Å, c =21.5065 (3) Å. Magnetic susceptibility, electrical resistivity, Hall effect, and heat capacity measurements indicate a metallic character and the occurrence of antiferromagnetic order below a Néel temperature TN ¼ 23 K. The transition is exceptionally robust and TN decreases by 0.2 K under a magnetic field of 9 T. A modified Curie-Weiss fit of the high-temperature magnetic susceptibility curve X(T) gives an effective magnetic moment meff = 2.54 muB close to the value expected for trivalent Np. Low temperature heat capacity measurements give a reduced Sommerfeld linear coefficient close to 25 mJ mol1K2 and a Debye Temperature Theta= 181 K. First principles, correlated-band electronic structure calculations suggest that the neptunium magnetic moment in NpPt2In7 is localized and that a quasi-two-dimensional antiferromagnetic structure could result from the competition of very weak interlayer interactions leading to very anisotropic properties.en_GB
dc.description.sponsorshipJRC.G.I.5-Advanced Nuclear Knowledgeen_GB
dc.format.mediumPrinteden_GB
dc.languageENGen_GB
dc.publisherELSEVIER SCIENCE SAen_GB
dc.relation.ispartofseriesJRC109117en_GB
dc.titleStructural and physical characterization of NpPt2In7en_GB
dc.typeArticles in periodicals and booksen_GB
dc.identifier.doi10.1016/j.jallcom.2018.07.163 (online)en_GB
JRC Directorate:Nuclear Safety and Security

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