High critical current density and high-tolerance superconductivity in high-entropy alloy thin films.

ABSTRACT: High-entropy alloy (HEA) superconductors-a new class of functional materials-can be utilized stably under extreme conditions, such as in space environments, owing to their high mechanical hardness and excellent irradiation tolerance. However, the feasibility of practical applications of HEA superconductors has not yet been demonstrated because the critical current density (J_c) for HEA superconductors has not yet been adequately characterized. Here, we report the fabrication of high-quality superconducting (SC) thin films of Ta-Nb-Hf-Zr-Ti HEAs via a pulsed laser deposition. The thin films exhibit a large J_c of >1 MA cm^-2 at 4.2 K and are therefore favorable for SC devices as well as large-scale applications. In addition, they show extremely robust supercond

SUBMITTER: Jung SG 

PROVIDER: S-EPMC9188561 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature