IPAC2019 - List of Authors (Dawson, K.)

Paper	Title	Page
WEPRB011	PVD Depostion of Nb₃Sn Thin Film on Copper Substrate from an Alloy Nb₃Sn Target	2818
	R. Valizadeh, S. Aliasghari, A.N. Hannah, O.B. Malyshev STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom K. Dawson, V.R. Dhanak The University of Liverpool, Liverpool, United Kingdom G.B.G. Stenning STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom D. Turner STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom D. Turner Cockcroft Institute, Lancaster University, Lancaster, United Kingdom
	In this study we report on the PVD deposition of Nb₃Sn on Cu substrates with and without a thick Nb interlayer to produce Cu/Nb/Nb₃Sn and Cu/Nb₃Sn multilayer structures. The Nb₃Sn was sputtered directly from an alloy target at room and elevated temperatures. The dependence of the superconducting properties of the total structure on deposition parameters has been determined. The films have been characterized via SEM, XRD, EDX and SQUID magnetometer measurements. Analysis showed that the composition at both room and elevated temperature was within the desired stoichiometry of 24’25 at%. However, superconductivity was only observed for deposition at elevated temperature or post annealing at 650 °C. The critical temperature was determined to be in the range of 16.8 to 17.4 K. In the case of bilayer deposition, copper segregation from the interface all the way to the surface was observed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB011
About •	paper received ※ 14 May 2019 paper accepted ※ 23 May 2019 issue date ※ 21 June 2019
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

PVD Depostion of Nb₃Sn Thin Film on Copper Substrate from an Alloy Nb₃Sn Target

2818

R. Valizadeh, S. Aliasghari, A.N. Hannah, O.B. Malyshev
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
K. Dawson, V.R. Dhanak
The University of Liverpool, Liverpool, United Kingdom
G.B.G. Stenning
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
D. Turner
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
D. Turner
Cockcroft Institute, Lancaster University, Lancaster, United Kingdom

In this study we report on the PVD deposition of Nb₃Sn on Cu substrates with and without a thick Nb interlayer to produce Cu/Nb/Nb₃Sn and Cu/Nb₃Sn multilayer structures. The Nb₃Sn was sputtered directly from an alloy target at room and elevated temperatures. The dependence of the superconducting properties of the total structure on deposition parameters has been determined. The films have been characterized via SEM, XRD, EDX and SQUID magnetometer measurements. Analysis showed that the composition at both room and elevated temperature was within the desired stoichiometry of 24’25 at%. However, superconductivity was only observed for deposition at elevated temperature or post annealing at 650 °C. The critical temperature was determined to be in the range of 16.8 to 17.4 K. In the case of bilayer deposition, copper segregation from the interface all the way to the surface was observed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2019-WEPRB011

About •

paper received ※ 14 May 2019 paper accepted ※ 23 May 2019 issue date ※ 21 June 2019

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)