Magnetic Properties of NpPdSn |
| K. Gofryk, J.-C. Griveau, R. Jardin, E. Colineau, J. Rebizant, F. Wastin and R. Caciuffo
European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, 76125 Karlsruhe, Germany |
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| 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 P62m). NpPdSn orders antiferromagnetically at 19 K and exhibits a Curie-Weiss behavior with μeff=2.66 μB and Θpp=-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 K2)). 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. |
| DOI: 10.12693/APhysPolA.115.80 PACS numbers: 75.50.Ee, 71.27.+a, 75.30.Mb |