Title: Quadrupolar and Magnetic Ordering in (U,Np)Pd3
Authors: MCEWEN K.a.WALKER H.c.BOULET PascalCOLINEAU ERICWASTIN FRANCKWILKINS S.b.
Citation: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN vol. 75 p. 20-23
Publisher: PHYSICAL SOCIETY JAPAN
Publication Year: 2006
JRC Publication N°: JRC31293
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC31293
Type: Contributions to Conferences
Abstract: UPd3 exhibits four phase transitions between 8 K and 4 K which have been attributed to a succession of antiferroquadrupolar ordered structures of the uranium 5f2 electrons. These structures have been studied by resonant X-ray scattering techniques.We present new measurements of the azimuthal dependence of the superlattice intensities from which we have deduced the order parameter in the phase immediately below T0 = 7:6 K to be Qzx. We also report studies of dhcp NpPd3 with results for the magnetic susceptibility, heat capacity and electrical resistivity. Two phase transitions have been observed at 30 K and 10 K. The evolution of the quadrupolar phases in UPd3 has been determined in samples of (U1¡xNpx)Pd3.
JRC Institute:Institute for Transuranium Elements

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