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Magnetic Properties of NpPdSn

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Gofryk K., Griveau J., Jardin R., Colineau E., Rebizant J., Wastin F., Caciuffo R.

Acta Physica Polonica A

2009

vol. 115

issue 1

80-82

A new compound NpPdSn was prepared and studied by X-ray diffraction, magnetization, heat capacity and electrical resistivity measurements, performed in the temperature range 2-300 K and under magnetic field up to 14 T. The crystal structure determined by single-crystal X-ray analysis is hexagonal with ZrNiAl-type (space group P\bar{6}2m). NpPdSn orders antiferromagnetically at 19 K and exhibits a Curie-Weiss behavior with μ_{eff}=2.66 μ_{B} and Θp_{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 specific heat (γ≈90 mJ/(mol K^{2})). It suggests that NpPdSn may be classified as a new Np-based antiferromagnetic Kondo lattice, one of the very few known amidst transuranium-based intermetallics.

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1 Acta Physica Polonica A

1 2009

1 Caciuffo R.

1 Colineau E.

1 Gofryk K.

1 Griveau J.

1 Jardin R.

1 Rebizant J.

1 Wastin F.

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Magnetic Properties of NpPdSn