Crystal Structure and Physical Properties of 243AmPd5Al2

GRIVEAU, Jean-Christophe; GOFRYK, Krzysztof; BOUEXIERE, Daniel; COLINEAU, Eric; REBIZANT, J.

doi:10.1103/PhysRevB.85.085108

We report on the crystal structure, magnetic susceptibility, specific heat, and electrical and thermo-electrical properties of AmPd5Al2, the americium counterpart of the unconventional superconductor NpPd5Al2. AmPd5Al2 crystallizes in the ZrNi2Al5-type of structure with lattice parameters: a = 4.1298 ºA and c = 14.7925 ºA. Magnetization measurements of AmPd5Al2 indicate a paramagnetic behavior with no hint of magnetic ordering or superconductivity down to 2K. This aspect is directly related to its 5f6 electronic configuration with J = 0. The specific heat measurements confirm the nonmagnetic ground state of this compound. The low temperature electronic specific heat °e » 20 mJ mol-1K-2 is clearly enhanced as compared to americium metal. All transport measurements obtained point to a metallic behavior in AmPd5Al2.

GRIVEAU Jean-Christophe; GOFRYK Krzysztof; BOUEXIERE Daniel; COLINEAU Eric; REBIZANT J.;

2012-03-06

AMER PHYSICAL SOC

JRC64227

1098-0121,

http://prb.aps.org/abstract/PRB/v85/i8/e085108, https://publications.jrc.ec.europa.eu/repository/handle/JRC64227,

10.1103/PhysRevB.85.085108,

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