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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 12: AKBP Poster Session
AKBP 12.7: Poster
Thursday, March 21, 2024, 11:00–14:00, Poster A
Co-sputtering of Nb3Sn thin films for prospective SRF applications — •Amir Farhood, Nils Schäfer, Alexey Arzumanov, Márton Major, and Lambert Alff — Institute of Materials Science, TU Darmstadt, 64287 Darmstadt, Germany
Nb3Sn thin films are excellent candidates for superconducting radio frequency (SRF) applications due to their low surface resistivity and high superheating field in comparison to pure bulk Nb. Magnetron co-sputtering is shown to grow Nb3Sn thin films with excellent homogeneity and microstructure at low temperature. In this work, the deposition of Nb3Sn thin films using the mentioned magnetron co-sputtering process with substrate temperature of 400 ∘C to 600 ∘C on fused silica substrates was done. Based on earlier works, the presence of phase pure Nb3Sn was shown by X-ray diffraction (XRD) scans. The stoichiometry of the thin films was verified by energy dispersive spectroscopy (EDS) measurements. Finally, critical temperature up to 16.5 K were measured for the applied thin films.
This work was supported by the German Federal Ministry for Education and Research (BMBF) through grant 05H21RDRB1 and the German Research Foundation (DFG) via AccelencE research training Group (GRK2128).
Keywords: SRF cavities; Nb3Sn; Thin films; Magnetron sputtering; Superconductor