Superconductivity in Cubic A15-type V–Nb–Mo–Ir–Pt High-Entropy Alloys
oleh: Bin Liu, Bin Liu, Bin Liu, Jifeng Wu, Jifeng Wu, Yanwei Cui, Yanwei Cui, Yanwei Cui, Qinqing Zhu, Qinqing Zhu, Qinqing Zhu, Guorui Xiao, Guorui Xiao, Guorui Xiao, Siqi Wu, Guanghan Cao, Zhi Ren, Zhi Ren
| Format: | Article |
|---|---|
| Diterbitkan: | Frontiers Media S.A. 2021-03-01 |
Deskripsi
We report the crystal structure and superconducting properties of new V5+2xNb35−xMo35−xIr10Pt15 high-entropy alloys (HEAs) for x in the range of 0 ≤x≤ 10. These HEAs are found to crystallize in a cubic A15-type structure and have a weakly coupled, fully gapped superconducting state. A maximum Tc of 5.18 K and zero-temperature upper critical field Bc2(0) of 6.4 T are observed at x = 0, and both quantities decrease monotonically with the increase of V content x. In addition, Tc shows an increase with increasing valence electron concentration from 6.4 to 6.5, which is compared with other A15-type HEA and binary superconductors.