High-Pressure Synthesis and Structural Stability of the Ternary Hydride Mg<sub>4</sub>Pt<sub>3</sub>H<sub>6</sub>

POSTER

Abstract

The phase behavior of the Mg-Pt-H system was explored using a combination structure prediction and high-pressure and high-temperature experiments. A new complex metal hydride with composition Mg4Pt3H6 was identified using laser-heated diamond anvil cell experiments. X-ray diffraction (XRD) analysis reveals that the compound possesses a unique structure type, and the hydride remains stable upon quenching to ambient conditions. Mg4Pt3H6 exhibits metallic electrical conductivity, which is rare among known complex metal hydrides, providing valuable insights for achieving low-pressure superconductivity in hydride materials.

Presenters

  • Wencheng Lu

    • Earth and Planets Laboratory, Carnegie Institution for Science

Authors

  • Wencheng Lu

    • Earth and Planets Laboratory, Carnegie Institution for Science

  • Timothy Strobel

    • Earth and Planets Laboratory, Carnegie Institution for Science

  • Rohit P Prasankumar

    • Enterprise Science Fund, Intellectual Ventures, 3150 139th Ave SE, Bellevue, WA, 98005, USA

  • Matthew Julian

    • Enterprise Science Fund, Intellectual Ventures, 3150 139th Ave SE, Bellevue, WA, 98005, USA

  • michael J hutcheon

    • Theory of Condensed Matter Group, Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom

  • Chris J Pickard

    • University of Cambridge

  • Kapildeb Dolui

    • Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK