Magnetic and electronic properties of NpPdSn

K. Shrestha, D. Antonio, J.-C. Griveau, K. Prokeš, P. Gaczyński, E. Colineau, R. Caciuffo, and K. Gofryk

Phys. Rev. Materials 2, 074401 – Published 5 July 2018

Abstract

We have studied NpPdSn by means of the heat capacity, electrical resistivity, Seebeck and Hall effect, ${}^{237}{Np}$ Mössbauer spectroscopy, and neutron diffraction measurements in the temperature range 2–300 K and under magnetic fields up to 14 T. NpPdSn orders antiferromagnetically below the Néel temperature $T_{N} = 19 K$ and shows localized magnetism of ${Np}^{3 +}$ ion with a doubly degenerate ground state. In the magnetic state the electrical resistivity and heat capacity are characterized by electron-magnon scattering with spin-waves spectrum typical of anisotropic antiferromagnets. An enhanced Sommerfeld coefficient and typical behavior of magnetorestistivity, Seebeck and Hall coefficients are all characteristic of systems with strong electronic correlations. The low temperature antiferromagnetic state of NpPdSn is verified by neutron diffraction and ${}^{237}{Np}$ Mössbauer spectroscopy and possible magnetic structures are discussed.

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Received 12 March 2018
Revised 8 May 2018

DOI:https://doi.org/10.1103/PhysRevMaterials.2.074401

Physics Subject Headings (PhySH)

Antiferromagnetism Electrical conductivity Electronic structure Kondo effect Magnetic phase transitions Magnetism Thermoelectric effects

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

K. Shrestha^1,*, D. Antonio^1,*, J.-C. Griveau², K. Prokeš³, P. Gaczyński², E. Colineau², R. Caciuffo², and K. Gofryk^1,†

¹Idaho National Laboratory, Idaho Falls, Idaho 83415, USA
²European Commission, Joint Research Centre (JRC), Directorate G - Nuclear Safety and Security, Postfach 2340, D-76125 Karlsruhe, Germany
³Helmholtz-Zentrum Berlin, Hahn-Meitner-Platz 1, D-14109 Berlin, Germany