A systematic investigation using oxygen titration to investigate the properties of Ce<sub>5</sub>Ge<sub>3</sub>O<sub>x</sub> (x = 0-1.0)

ORAL

Abstract



Ce5Ge3 was previously reported by Kurisu et al. as a dense Kondo compound; however, due to increased interest in materials with strong electron correlations and tunable ground states, we decided to return to this system and do a detailed investigation1. Single crystal and powder diffraction measurements confirmed the existence of the empty (x = 0) and the filled ()5Si3 structure. Additional measurements were conducted to investigate the effect of oxygen on the physical properties of the non-stoichiometric interstitial phase Ce5Ge3Ox (0 ≤ x ≤ 1). The chemical analysis provided great insight into the effect of oxygen on this system; to ascertain the effects on the physical properties, transport and magnetization measurements were conducted. The results of these measurements will be discussed in detail, as well as the resulting phase diagram.

[1]M. Kurisu, T. Mitsumata, and I. Oguro, Physica B: Condes. Matter. 259-261 (1999) 96-98, https://doi.org/10.1016/S0921-4526(98)01041-2.

*US Air Force Office of Scientific Research Grants FA9550-15-1-0236 and FA9550-20-1-0068, the T.L.L. Temple Foundation, the John J. and Rebecca Moores Endowment, and the State of Texas through the Texas Center for Superconductivity at the University of Houston (TcSUH).

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Presenters

  • Melissa J Gooch

    • TcSUH and Department of Physics, University of Houston
    • University of Houston

Authors

  • Melissa J Gooch

    • TcSUH and Department of Physics, University of Houston
    • University of Houston

  • Xiaojing Ma

    • TcSUH and Department of Chemistry, University of Houston

  • Liangzi Deng

    • TcSUH and Department of Physics, University of Houston
    • University of Houston

  • Alexander P Litvinchuk

    • TcSUH and Department of Physics, University of Houston

  • Zhongjia Tang

    • TcSUH and Department of Chemistry, University of Houston
    • TCSUH and Department of Chemistry, University of Houston.

  • shuyuan huyan

    • Ames Laboratory
    • Ames National Laboratory

  • Paul C. W. Chu

    • TcSUH and Department of Physics, University of Houston; Lawrence Berkeley National Laboratory
    • University of Houston
    • TCSUH and Department of Physics, University of Houston; Lawrence Berkeley National Laboratory; Hong Kong University of Science and Technology.
    • TCSUH and Department of Physics, University of Houston; Lawrence Berkeley National Laboratory; Hong Kong University of Science and Technology

  • Arnold M Guloy

    • TCSUH and Department of Chemistry, University of Houston
    • TCSUH and Department of Chemistry, University of Houston.