Abstract
A new intermetallic compound, the first to be structurally identified in the Cu−Bi binary system, is reported. This compound is accessed by high-pressure reaction of the elements. Its detailed characterization, physical property measurements, and ab initio calculations are described. The commensurate crystal structure of Cu11Bi7is a unique variation of the NiAs structure type. Temperature-dependent electrical resistivity and heat capacity measurements reveal a bulk superconducting transition at Tc=1.36 K. Density functional theory calculations further demonstrate that Cu11Bi7can be stabilized (relative to decomposition into the elements) at high pressure and temperature. These results highlight the ability of high-pressure syntheses to allow for inroads into heretofore-undiscovered intermetallic systems for which no thermodynamically stable binaries are known.
Original language | English (US) |
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Pages (from-to) | 13446-13449 |
Number of pages | 4 |
Journal | Angewandte Chemie - International Edition |
Volume | 55 |
Issue number | 43 |
DOIs | |
State | Published - Oct 17 2016 |
Keywords
- bismuth
- copper
- high-pressure synthesis
- intermetallics
- superconductivity
ASJC Scopus subject areas
- Catalysis
- General Chemistry
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CSD 1790427: Experimental Crystal Structure Determination
Clarke, S. M. (Contributor), Walsh, J. P. S. (Contributor), Amsler, M. (Contributor), Malliakas, C. D. (Contributor), Yu, T. (Contributor), Goedecker, S. (Contributor), Wang, Y. (Contributor), Wolverton, C. (Contributor) & Freedman, D. E. (Contributor), FIZ Karlsruhe - Leibniz Institute for Information Infrastructure, 2016
DOI: 10.25505/fiz.icsd.cc1y32qv, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.25505/fiz.icsd.cc1y32qv&sid=DataCite
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