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Kinetically induced low-temperature synthesis of Nb₃Sn thin films

Schäfer, Nils ; Karabas, Nail ; Palakkal, Jasnamol Pezhumkattil ; Petzold, Stefan ; Major, Marton ; Pietralla, Norbert ; Alff, Lambert (2021)
Kinetically induced low-temperature synthesis of Nb₃Sn thin films.
In: Journal of Applied Physics, 2021, 128 (13)
doi: 10.26083/tuprints-00019408
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Item Type: Article
Type of entry: Secondary publication
Title: Kinetically induced low-temperature synthesis of Nb₃Sn thin films
Language: English
Date: 2021
Place of Publication: Darmstadt
Year of primary publication: 2021
Publisher: AIP Publishing
Journal or Publication Title: Journal of Applied Physics
Volume of the journal: 128
Issue Number: 13
Collation: 7 Seiten
DOI: 10.26083/tuprints-00019408
Corresponding Links:
Origin: Secondary publication service
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°C. These thin films show a critical temperature of 16.3 K, a high critical current density of 1.60×10⁵A/cm², 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.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-194083
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
Date Deposited: 31 Aug 2021 12:12
Last Modified: 10 Aug 2023 11:06
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19408
PPN: 510470599
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