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Title: Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor

Abstract

High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exceptional robustness against disorder. Here we show that the valence electron count dependence of the superconducting transition temperature in the high-entropy alloy falls between those of analogous simple solid solutions and amorphous materials and test the effect of alloy complexity on the superconductivity. We propose high-entropy alloys as excellent intermediate systems for studying superconductivity as it evolves between crystalline and amorphous materials.

Authors:
 [1];  [2];  [3];  [2];  [1]
  1. Princeton Univ., NJ (United States). Dept. of Chemistry
  2. Gdansk Univ. of Technology (Poland). Faculty of Applied Physics and Mathematics
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Gordon and Betty Moore Foundation; National Science Centre (Poland)
OSTI Identifier:
1330724
Alternate Identifier(s):
OSTI ID: 1372433
Report Number(s):
BNL-113907-2017-JA
Journal ID: ISSN 0027-8424; R&D Project: MA015MACA; KC0201010
Grant/Contract Number:  
SC0012704; AC02-98CH10886; DEC-2012/07/E/ST3/00584; GBMF-4412
Resource Type:
Journal Article: Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 113; Journal Issue: 46; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; High-entropy Alloys; Superconductivity; Disordered Metals

Citation Formats

von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, and Cava, Robert Joseph. Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor. United States: N. p., 2016. Web. doi:10.1073/pnas.1615926113.
von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, & Cava, Robert Joseph. Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor. United States. doi:10.1073/pnas.1615926113.
von Rohr, Fabian, Winiarski, Michał J., Tao, Jing, Klimczuk, Tomasz, and Cava, Robert Joseph. Tue . "Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor". United States. doi:10.1073/pnas.1615926113.
@article{osti_1330724,
title = {Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor},
author = {von Rohr, Fabian and Winiarski, Michał J. and Tao, Jing and Klimczuk, Tomasz and Cava, Robert Joseph},
abstractNote = {High-entropy alloys are made from random mixtures of principal elements on simple lattices, stabilized by a high mixing entropy. The recently discovered body-centered cubic (BCC) Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor appears to display properties of both simple crystalline intermetallics and amorphous materials; e.g., it has a well-defined superconducting transition along with an exceptional robustness against disorder. Here we show that the valence electron count dependence of the superconducting transition temperature in the high-entropy alloy falls between those of analogous simple solid solutions and amorphous materials and test the effect of alloy complexity on the superconductivity. We propose high-entropy alloys as excellent intermediate systems for studying superconductivity as it evolves between crystalline and amorphous materials.},
doi = {10.1073/pnas.1615926113},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 46,
volume = 113,
place = {United States},
year = {Tue Nov 01 00:00:00 EDT 2016},
month = {Tue Nov 01 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1073/pnas.1615926113

Citation Metrics:
Cited by: 1 work
Citation information provided by
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Works referenced in this record:

Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
journal, May 2004

  • Yeh, J.-W.; Chen, S.-K.; Lin, S.-J.
  • Advanced Engineering Materials, Vol. 6, Issue 5, p. 299-303
  • DOI: 10.1002/adem.200300567