Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W07: Cerium, Plutonium, and Uranium Based Materials
3:00 PM–5:48 PM,
Thursday, March 7, 2024
Room: L100H
Sponsoring
Unit:
DCMP
Chair: Nicholas Sirica, Los Alamos National Laboratory (LANL)
Abstract: W07.00008 : A systematic investigation using oxygen titration to investigate the properties of Ce5Ge3Ox (x = 0-1.0)*
4:24 PM–4:36 PM
Presenter:
Melissa J Gooch
(TcSUH and Department of Physics, University of Houston)
Authors:
Melissa J Gooch
(TcSUH and Department of Physics, University of Houston)
Xiaojing Ma
(TcSUH and Department of Chemistry, University of Houston)
Liangzi Deng
(TcSUH and Department of Physics, University of Houston)
Alexander P Litvinchuk
(TcSUH and Department of Physics, University of Houston)
Zhongjia Tang
(TcSUH and Department of Chemistry, University of Houston)
shuyuan huyan
(Ames Laboratory)
Ching-Wu Chu
(TcSUH and Department of Physics, University of Houston; Lawrence Berkeley National Laboratory)
Arnold M Guloy
(TCSUH and Department of Chemistry, University of Houston)
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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