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Kinetically induced low-temperature synthesis of Nb3Sn thin films

Schäfer, N. ; Karabas, N. ; Palakkal, J. P. ; Petzold, S. ; Major, M. ; Pietralla, N. ; Alff, L. (2020)
Kinetically induced low-temperature synthesis of Nb3Sn thin films.
In: Journal of Applied Physics, 128 (13)
doi: 10.1063/5.0015376
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Nb3Sn thin films are promising candidates for future application in superconducting radio frequency cavities due to their low surface resistivity, high critical temperature, and critical field, as compared to bulk niobium, which is the current state of the art. In this paper, we report the deposition of Nb3Sn thin films by magnetron co-sputtering at the extremely low temperature of 435 degrees C. These thin films show a critical temperature of 16.3 K, a high critical current density of 1.60 x 10(5) A/cm(2), and a strong shielding effect. The key to achieving low-temperature growth is the independent kinetic control of Nb and Sn species in the sputtering process. From a technological viewpoint, the low-temperature approach paves the way for the use of Nb3Sn as a coating in cryogenic efficient copper based cavities, thereby avoiding the detrimental interdiffusion of Cu.

Typ des Eintrags: Artikel
Erschienen: 2020
Autor(en): Schäfer, N. ; Karabas, N. ; Palakkal, J. P. ; Petzold, S. ; Major, M. ; Pietralla, N. ; Alff, L.
Art des Eintrags: Bibliographie
Titel: Kinetically induced low-temperature synthesis of Nb3Sn thin films
Sprache: Englisch
Publikationsjahr: 7 Oktober 2020
Verlag: American Institute of Physics
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Applied Physics
Jahrgang/Volume einer Zeitschrift: 128
(Heft-)Nummer: 13
DOI: 10.1063/5.0015376
URL / URN: https://aip.scitation.org/doi/10.1063/5.0015376
Kurzbeschreibung (Abstract):

Nb3Sn thin films are promising candidates for future application in superconducting radio frequency cavities due to their low surface resistivity, high critical temperature, and critical field, as compared to bulk niobium, which is the current state of the art. In this paper, we report the deposition of Nb3Sn thin films by magnetron co-sputtering at the extremely low temperature of 435 degrees C. These thin films show a critical temperature of 16.3 K, a high critical current density of 1.60 x 10(5) A/cm(2), and a strong shielding effect. The key to achieving low-temperature growth is the independent kinetic control of Nb and Sn species in the sputtering process. From a technological viewpoint, the low-temperature approach paves the way for the use of Nb3Sn as a coating in cryogenic efficient copper based cavities, thereby avoiding the detrimental interdiffusion of Cu.

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten
Hinterlegungsdatum: 20 Nov 2020 11:51
Letzte Änderung: 20 Nov 2020 11:51
PPN:
Projekte: This work was supported by the German Federal Ministry of Education and Research (BMBF) through Grant No. 05H18RDRB2 and the German Research Foundation (DFG) through GRK 2128.
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