Superconductivity in the high-entropy alloy (NbTa)0.67(MoHfW)0.33
Artykuł w czasopiśmie
MNiSW
140
Lista 2021
| Status: | |
| Autorzy: | Sobota Piotr, Topolnicki Rafał, Ossowski Tomasz, Pikula Tomasz, Pikul Adam, Idczak Rafał |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2022 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 18 |
| Wolumen/Tom: | 106 |
| Numer artykułu: | 184512 |
| Strony: | 1 - 10 |
| Web of Science® Times Cited: | 9 |
| Scopus® Cytowania: | 9 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | This work was cofinanced by the National Science Center (Poland) under the OPUS 20 Project No. 2020/39/B/ST5/01782 and by University of Wrocław under the Excellence Initiative Research University Project No. BPIDUB.19.2021. P.S., R.T., and T.O. took part in the investigation; P.S., R.T., T.O., T.P., and R.I. took part in the formal analysis; P.S. and R.I. wrote the original draft; P.S., A.P., and R.I. reviewed and edited the final version of manuscript; R.I. acquired the funding. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this pape. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Witryna wydawcy |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 23 listopada 2022 |
| Abstrakty: | angielski |
| Structural and physical properties of the high-entropy alloy (NbTa) 0.67 (MoHfW)0.33 were studied by x-ray powder diffraction, energy dispersive x-ray spectroscopy, magnetization, electrical resistivity, and specific heat measurements. The experimental results were supported by theoretical calculations using two complementary approaches for electronic structure calculations: the Korringa-Kohn-Rostoker method with the coherent potential approximation (KKR-CPA) and projector augmented wave (PAW) within the density functional theory. It was found that the alloy forms with a cubic, body-centered structure (space group Im3m, W-type structure) with a lat- tice parameter a = 3.287(1) Å and a random (but microscopically homogeneous) distribution of the constituent elements. At high temperature the alloy exhibits simple metallic behavior, while at low temperature it becomes a type-II superconductor with the critical temperature Tc ≈ 4.3 K and the upper critical field μ0Hc2 ≈ 1.45 T. The electron-phonon coupling constant calculated from the PAW data, λth−PAW el−ph = 0.63, is in perfect agreement with the experimental results. |
