Magnetic and Electronic Properties of NpPdSn
A new compound NpPdSn was prepared and studied by X-ray di®raction, magnetization, heat capacity and
electrical resistivity measurements, performed in the temperature range 2{300 K and under magnetic ¯eld up to
14 T. The crystal structure determined by single-crystal X-ray analysis is hexagonal with ZrNiAl-type (space group
P62m). NpPdSn orders antiferromagnetically at 19 K and exhibits a Curie{Weiss behavior with ¹e® = 2:66 ¹B
and £p = ¡47 K. Bulk properties show temperature variations similar to systems with strong electronic
correlations with a large negative paramagnetic Curie temperature and an enhanced low-temperature speci¯c heat
(° ¼ 90 mJ/(mol K2)). It suggests that NpPdSn may be classi¯ed as a new Np-based antiferromagnetic Kondo
lattice, one of the very few known amidst transuranium-based intermetallics.
GOFRYK K.;
GRIVEAU Jean-Christophe;
COLINEAU Eric;
JARDIN R.;
REBIZANT J.;
WASTIN Franck;
CACIUFFO Roberto;
2009-06-05
POLISH ACAD SCIENCES INST PHYSICS
JRC52468
0587-4246,
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