Cited by 109High Entropy Alloys StudiesPhysics of Superconductivity and MagnetismSuperconducting Materials and Applications

Cutting Edge of High-Entropy Alloy Superconductors from the Perspective of Materials Research

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Kitagawa, Jiro, Hamamoto, Shusuke, Ishizu, Naoki·2020·Metals

Abstract

High-entropy alloys (HEAs) are a new class of materials which are being energetically studied around the world. HEAs are characterized by a multicomponent alloy in which five or more elements randomly occupy a crystallographic site. The conventional HEA concept has developed into simple crystal structures such as face-centered-cubic (fcc), body-centered-cubic (bcc) and hexagonal-closed packing (hcp) structures. The highly atomic-disordered state produces many superior mechanical or thermal properties. Superconductivity has been one of the topics of focus in the field of HEAs since the discovery of the bcc HEA superconductor in 2014. A characteristic of superconductivity is robustness against atomic disorder or extremely high pressure. The materials research on HEA superconductors has just begun, and there are open possibilities for unexpectedly finding new phenomena. The present review updates the research status of HEA superconductors. We survey bcc and hcp HEA superconductors and discuss the simple material design. The concept of HEA is extended to materials possessing multiple crystallographic sites; thus, we also introduce multisite HEA superconductors with the CsCl-type, α-Mn-type, A15, NaCl-type, σ-phase and layered structures and discuss the materials research on multisite HEA superconductors. Finally, we present the new perspectives of eutectic HEA superconductors and gum metal HEA superconductors.

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  • BCC-type HEA superconductors predominantly consist of transition metals such as Nb, Ta, Zr, V, Hf, and Ti, which exhibit VECs of either 4 or 5.

    “The BCC-type HEA superconductors predominantly consist of transition metals such as Nb, Ta, Zr, V, Hf, and Ti, which exhibit VECs of either 4 or 5 7,8 .”

    From Recent advances in high-entropy superconductors (2024) · cites this paper as [8]

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Research works printed but not linked: 2

  1. Ishizu, N.; Kitagawa, J. Trial of a search for a face-centered-cubic high-entropy alloy superconductor. arXiv 2020, arXiv:2007.00788. Available online: https://arxiv.org/abs/2007.00788 (accessed on 22 June 2020). · arXiv
  2. Kitagawa, J.; Hamamoto, S. Superconductivity in Nb 5 Ir 3-x Pt x O. JPS Conf. Proc. 2020, 30, 011055.

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Authors
Kitagawa, J., Hamamoto, S., & Ishizu, N.
Affiliations
Fukuoka Institute of Technology (JP)
Corresponding author
Kitagawa, Jiro
Venue
Metals
Publisher
MDPI AG
Published
2020-08-10
Volume
10
Issue
8
Pages
1078
ISSN
2075-4701 (ISSN-L)
OpenAlex
W3048611899
Cited by
109
References
70
Citations by year
2026: 11 · 2025: 24 · 2024: 26 · 2023: 13 · 2022: 21 · 2021: 14
FWCI
5.90
Type
journal article
Language
en
Open access
Locations
  • Metals (publishedVersion, cc-by)
  • arXiv (Cornell University) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › High Entropy Alloys Studies
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Physics of Superconductivity and Magnetism
  • Physical Sciences › Engineering › Biomedical Engineering › Superconducting Materials and Applications
Keywords
high-entropy alloys, superconductivity, B2 phase, A15 structure, rock salt structure, sigma phase, layered structure, eutectic high-entropy alloys, Gum Metal, atomic disorder

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