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Title Microstructural and superconducting radiofrequency (SRF) properties of multilayer sequentially sputtered Nb3Sn films
Abstract Nb3Sn is considered as a potential candidate for superconducting radiofrequency cavities for particle acceleration due to its higher transition temperature of 18.3 K and higher superheating field of 400 mT. Nb3Sn films can be grown inside the surface of a Nb cavity by sequentially sputtering multiple layers of Nb and Sn thin films followed by annealing at 950 °C for 3 h. Here we report the microstructure analysis of Nb3Sn films grown on Nb substrates. The films crystal structure, surface morphology, and compositions were characterized by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy respectively. The films had polycrystalline Nb3Sn structure with fine grain surface and an atomic Sn composition of ~23%. We also report the RF surface resistance of this film under different temperatures at 7.4 GHz to understand the feasibility of this method for the SRF application. The RF surface resistance of the films fabricated from magnetron sputtering were
Author(s) Md. Nizam Sayeed, Grigory Eremeev, Charlie Reece, Hani ELSAYED-ALI, Peter Owen
Publication Date February 2021
Category SRF Technology
Document Type Meeting, Journal Article
Primary Institution Old Dominion University
Affiliation Accelerator Ops, R&D / Inst for SRF Sci & Tech / SRF Research & Dev
Funding Source Nuclear Physics (NP)
Proprietary? No
This publication conveys Technical Science Results
Document Numbers
JLAB Number: JLAB-ACC-20-3281 OSTI Number: 1772223
LANL Number: Other Number: DOE/OR/23177-5076
Associated with an experiment No
Associated with EIC No
Supported by Jefferson Lab LDRD Funding No
Meeting / Conference
Meeting Name Applied Superconductivity Conference
Meeting Date 8/1/2010
Document Subtype Paper (proceedings only)
Journal Article
Journal Name IEEE Transactions in Applied Superconductivity
Refereed Yes
Volume 31
Issue 5
Page(s) 3500404
Attachments/Datasets/DOI Link
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DOI Link
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