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

Fabian von Rohr; Michał Jerzy Winiarski; Jing Tao; Tomasz Klimczuk; Robert J. Cava

doi:10.1073/pnas.1615926113

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 showthat 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.

Citations

1 2 8

CrossRef
0

Web of Science
1 3 8

Scopus

Authors (5)

Fabian von Rohr
- Princeton University Department of Chemistry
Michał Jerzy Winiarski dr inż.
Jing Tao
- Brookhaven National Laboratory Condensed Matter Physics Department
Tomasz Klimczuk prof. dr hab. inż.
Robert J. Cava
- Princeton University Department of Chemistry

Cite as

Full text

full text is not available in portal

full content of the article see on external site open in new tab

Keywords

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA no. 113, edition 46, pages 7144 - 7150,
ISSN: 0027-8424
Language:: English
Publication year:: 2016
Bibliographic description:: Rohr F., Winiarski M., Tao J., Klimczuk T., Cava R.: Effect of electron count and chemical complexity in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor// PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. -Vol. 113, iss. 46 (2016), s.7144-7150
DOI:: Digital Object Identifier (open in new tab) 10.1073/pnas.1615926113
Verified by:: Gdańsk University of Technology