The Preparation of a Challenging Superconductor Nb₃Al by Exploiting Nano Effect.

ABSTRACT: The Nb₃Al superconductor with excellent physical and working properties is one of the most promising materials in high-magnetic-field applications. However, it is difficult to prepare high-quality Nb₃Al with a desired superconducting transition temperature (T_c) because of its narrow phase formation area at high temperatures (>1940 °C). This work reports a method to prepare stoichiometric Nb₃Al powder samples at a relatively low temperature (1400 °C) by exploiting the nano effect of Nb particles with pretreatment of Nb powder under H₂/Ar atmosphere. The obtained Nb₃Al samples exhibit high T_c's of ~16.8K. Based on density functional theory (DFT) calculations and statistical mechanics analysis, the cruc

SUBMITTER: Luan C 

PROVIDER: S-EPMC10538086 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature