Synthesis and superconducting properties of praseodymium superhydride

ORAL

Abstract

Recently, many hydrogen-rich superhydrides with interesting superconducting properties have been synthesized at high-pressure temperature conditions. Still, the experimental synthesis of pure, stoichiometric superhydrides at relatively lower pressures remains largely unexplored. We are interested in synthesizing pure, stoichiometric hydrogen-rich materials at the lowest possible pressure. Pure hydrogen (H2), ammonia borane (NH3BH3), and paraffin (CnH2n+2) are being used as hydrogen sources for the synthesis of hydrides. However, it is unclear how additional elements such as B, N, and C present in ammonia borane and paraffin affect the structure and superconducting properties of hydrides. Here, we present the synthesis of various Pr-H phases carried out using pure hydrogen and elemental praseodymium. We will also present the superconducting properties calculated for the synthesized Pr-H phases. The structural properties of the superhydride phase will be compared with the literature report where the phase was synthesized using ammonia borane. This study will help to understand the effect of various hydrogen sources on the structural parameters of superconducting hydrides.

*US NSF (DMR-2104881) & DOE/NNSA (DE-NA0003975)

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Presenters

  • NILESH P SALKE

    • University of Illinois Chicago

Authors

  • NILESH P SALKE

    • University of Illinois Chicago

  • Ivan A Kruglov

    • Moscow Institute of Physics and Technology

  • Dmitrii V Semenok

    • Skolkovo Institute of Science and Technology

  • Jianshi Zhou

    • University of Texas at Austin
    • The University of Texas at Austin
    • University of Texas

  • Eran Greenberg

    • Center for Advanced Radiation Sources, University of Chicago

  • Vitali Prakapenka

    • Center for Advanced Radiation Sources, University of Chicago
    • GSECARS

  • Jin Liu

    • Center for High Pressure Science & Technology Advanced Research

  • Artem R Oganov

    • Skolkovo Institute of Science and Technology

  • Jung-Fu Lin

    • Jackson School of Geosciences, The University of Texas at Austin
    • The University of Texas at Austin
    • Department of Geological Sciences, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX 78712, USA

  • Russell J Hemley

    • University of Illinois at Chicago
    • University of Illinois Chicago
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois Chicago
    • Department of Physics and Chemistry, University of Illinois Chicago, 845, W. Taylor Street, Chicago, IL 60607
    • Departments of Physics, Chemistry, and Earth and Environmental Sciences, University of Illinois at Chicago