title: Crystal structure and physical properties of a novel Kondo antiferromagnet: U(3)Ru(4)Al(12).
abstract: A novel ternary compound U(3)Ru(4)Al(12) has been identified in the U-Ru-Al ternary diagram. Single-crystal x-ray diffraction indicates a hexagonal Gd(3)Ru(4)Al(12)-type structure for this uranium-based intermetallic. While this structure type usually induces geometrically a spin-glass behaviour, an antiferromagnetic ordering is observed at T(N) = 8.4 K in the present case. The reduced effective magnetic moment of U atoms (μ(eff) = 2.6 µ(B)) can be explained by Kondo-like interactions and crystal field effects that have been identified by a logarithmic temperature dependence of the electrical resistivity, negative values of the magnetoresistivity and particular shape of the Seebeck coefficient.
authors.affiliation: Sciences Chimiques de Rennes, Université Rennes 1, UMR CNRS 6226, Campus de Beaulieu, 263 avenue Général Leclerc, F-35042 Rennes Cedex, France.
authors.forename: M
authors.initials: M
authors.lastname: Pasturel
authors.forename: O
authors.initials: O
authors.lastname: Tougait
authors.forename: M
authors.initials: M
authors.lastname: Potel
authors.forename: T
authors.initials: T
authors.lastname: Roisnel
authors.forename: K
authors.initials: K
authors.lastname: Wochowski
authors.forename: H
authors.initials: H
authors.lastname: Noël
authors.forename: R
authors.initials: R
authors.lastname: Troć