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Title: Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis

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 Cu 11Bi 7 is a unique variation of the NiAs structure type. Temperature-dependent electrical resistivity and heat capacity measurements reveal a bulk superconducting transition at T c=1.36 K. Density functional theory calculations further demonstrate that Cu 11Bi 7 can 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.

Authors:
 [1];  [1];  [2];  [1];  [3];  [4];  [3];  [2];  [1]
  1. Department of Chemistry, Northwestern University, Evanston IL 60208 USA
  2. Department of Materials Science and Engineering, Northwestern University, Evanston IL 60208 USA
  3. Center for Advanced Radiation Sources, The University of Chicago, Chicago IL 60637 USA
  4. Department of Physics, Universität Basel, Kingelbergstr. 82 4056 Basel Switzerland
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
U.S. AIR FORCE- OFFICE OF SCIENTIFIC RESEARCHDARPA
OSTI Identifier:
1390892
Resource Type:
Journal Article
Resource Relation:
Journal Name: Angewandte Chemie (International Edition); Journal Volume: 55; Journal Issue: 43
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Clarke, Samantha M., Walsh, James P. S., Amsler, Maximilian, Malliakas, Christos D., Yu, Tony, Goedecker, Stefan, Wang, Yanbin, Wolverton, Chris, and Freedman, Danna E.. Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis. United States: N. p., 2016. Web. doi:10.1002/anie.201605902.
Clarke, Samantha M., Walsh, James P. S., Amsler, Maximilian, Malliakas, Christos D., Yu, Tony, Goedecker, Stefan, Wang, Yanbin, Wolverton, Chris, & Freedman, Danna E.. Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis. United States. doi:10.1002/anie.201605902.
Clarke, Samantha M., Walsh, James P. S., Amsler, Maximilian, Malliakas, Christos D., Yu, Tony, Goedecker, Stefan, Wang, Yanbin, Wolverton, Chris, and Freedman, Danna E.. 2016. "Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis". United States. doi:10.1002/anie.201605902.
@article{osti_1390892,
title = {Discovery of a Superconducting Cu-Bi Intermetallic Compound by High-Pressure Synthesis},
author = {Clarke, Samantha M. and Walsh, James P. S. and Amsler, Maximilian and Malliakas, Christos D. and Yu, Tony and Goedecker, Stefan and Wang, Yanbin and Wolverton, Chris and Freedman, Danna E.},
abstractNote = {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 Cu11Bi7 is 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 Cu11Bi7 can 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.},
doi = {10.1002/anie.201605902},
journal = {Angewandte Chemie (International Edition)},
number = 43,
volume = 55,
place = {United States},
year = 2016,
month = 9
}
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