Title: Extensive Studies of Antiferromagnetic PuPd2Sn
Authors: GOFRYK KrzysztofKACZOROWSKI D.GRIVEAU JEAN-CHRISTOPHEMAGNANI NicolaJARDIN REGISCOLINEAU ERICREBIZANT JEANWASTIN FRANCKCACIUFFO ROBERTO
Citation: PHYSICAL REVIEW B vol. 77 p. 014431
Publisher: AMERICAN PHYSICAL SOC
Publication Year: 2008
JRC N°: JRC44014
ISSN: 1098-0121
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC44014
DOI: 10.1103/PhysRevB.77.014431
Type: Articles in Journals
Abstract: A compound PuPd2Sn was studied by means of x-ray diffraction, magnetization, heat capacity, electrical resistivity, magnetoresistivity, Hall effect, and thermoelectric power measurements, performed in the temperature range 2¿300 K and in magnetic fields up to 14 T. This compound orders antiferromagnetically at 11 K and shows localized magnetism of Pu3+ ion with ef f being close to the intermediate coupling value. The total splitting of the plutonium 6H5/2 multiplet is of the order of 150 K with a doublet being the ground state. Below TN the specific heat and the electrical resistivity are dominated by electron-magnon scattering with an antiferromagnetic spin-waves spectrum typical of anisotropic antiferromagnetic systems. Strong enhancement of the low-temperature specific heat points to the presence of conduction electrons with high effective masses. The Hall coefficient of PuPd2Sn is positive and dominated by magnetic skew scattering. The thermoelectric power attains small positive values at high temperatures and exhibits a broad negative peak around 55 K. This behavior is discussed in terms of models appropriate for metallic systems with strong electronic correlations.
JRC Institute:Institute for Transuranium Elements

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