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説明:

The ternary phase diagram of the Au-Pb-Rh system has been studied from a viewpoint of the formation of intermetallic compounds. We indeed discovered two new compounds with nominal chemical formula of AuPb2Rh2 and AuPb4Rh5. They are revealed by XRD study to possess a similar crystal structure with each other having an orthorhombic crystal structure with Pmma symmetry. The resistivity measurements of AuPb2Rh2 show double superconducting transitions at 2.8 K and 1.7 K, while AuPb4Rh5 did not above 1.1 K. The significant shift of stoichiometric ratio of Au and Rh observed in both compounds suggests strongly that vacancy structures and site exchange, in particular, the AuPb4Rh5 compound, may play an important role in the physical properties of these compounds.

権利情報:

• In Copyright
  This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1557/s43580-022-00440-x

キーワード: AuPb2Rh2, ternary phase diagram, Au–Pb–Rh, AuPb4Rh5, superconductor

刊行年月日: 2022-12-06

出版者: Springer Science and Business Media LLC

掲載誌:

• MRS Advances (ISSN: 20598521) vol. 8 issue. 7 p. 404-408

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4825

公開URL: https://doi.org/10.1557/s43580-022-00440-x

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更新時刻: 2024-10-10 16:30:18 +0900

MDRでの公開時刻: 2024-10-10 16:30:20 +0900