Magnetostriction and magnetic torque measurements of uranium monosulfide single crystals

ORAL

Abstract

The family of actinide compounds AX, where A = actinides and X = N, P, As, Sb, S, Se, and Te have drawn great interest in research of actinide compounds because of their simple structure and rich magnetic properties. Recent study of UO2 and UN revealed the effectiveness in probing the magneto-structural coupling in actinides by high magnetic field magnetostriction. Uranium monosulfide (US) crystalizes in simple cubic rock salt structure and exhibits the highest ferromagnetic transition temperature in uranium monochalcogenides (TC = 177 K) with easy axis along [111] direction. At the magnetic phase transition the crystal structure undergoes a rhombohedral distortion along one of the [111] directions with a large magnetic anisotropy. This might imply that strong magneto-elastic interactions play important role in this material. In this talk, our recent measurements of the magnetostriction and magnetic torque of uranium monosulfide single crystals will be presented.

*This work is supported by DOE’s Early Career Research Program. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No. DMR-1157490 and DMR-1644779 and the State of Florida.

–

Presenters

  • Narayan Poudel

    • Idaho National Laboratory
    • Texas Center for Superconductivity and Department of Physics, University of Houston
    • Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

Authors

  • Narayan Poudel

    • Idaho National Laboratory
    • Texas Center for Superconductivity and Department of Physics, University of Houston
    • Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA

  • Marcelo Jaime

    • National High Magnetic Field Laboratory, Los Alamos
    • Los Alamos National Laboratory
    • National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545
    • NHMFL, Los Alamos National Labs
    • NHMFL-LANL
    • Pulsed Field Faclity, National High Magnetic Field Laboratory

  • Franziska Weickert

    • Florida State University
    • National High Magnetic Field Laboratory, Los Alamos
    • NHMFL, FSU
    • NHMFL, Los Alamos National Labs
    • Pulsed Field Faclity, National High Magnetic Field Laboratory

  • Jason R Jeffries

    • Lawrence Livermore National Laboratory

  • Krzysztof Gofryk

    • Idaho National Laboratory