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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ten Kate, Herman
European Organization for Nuclear Research
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Comparison of Two Detector Magnetic Systems for the Future Circular Hadron-Hadron Collider
- 2021Ultra-thin solenoid and cryostat development for novel detector magnetscitations
- 2020Conceptual Design of the Cryostat for a Highly Radiation Transparent 2 T Superconducting Detector Solenoid for FCC-ee+citations
- 2019Superconducting Detector Magnets Baseline Designs for Particle Physics Experiments at the Future Circular Collidercitations
- 2019Conceptual Development of a Novel Ultra-Thin and Transparent 2 T Superconducting Detector Solenoid for the Future Circular Collidercitations
- 2019Effect of resin impregnation on the transverse pressure dependence of the critical current in ReBCO Roebel cablescitations
- 2013Superconductivity in Nb-Sn thin films of stoichiometric and off-stoichiometric compositionscitations
- 2012The Effect of Ta and Ti Additions on the Strain Sensitivity of Bulk Niobium-Tincitations
- 2001Progress in the development of an 88-mm bore 10 Tn3Sn dipole magnetcitations
Places of action
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article
Superconductivity in Nb-Sn thin films of stoichiometric and off-stoichiometric compositions
Abstract
Binary Nb-Sn thin film samples were fabricated and characterized in terms of their composition, morphology, and superconducting properties. Nb-Sn was magnetron-sputtered onto heated R-plane sapphire substrates at 700°C, 800°C, and 900°C, using a custom-built heater assembly. Samples were cut into strips, where each strip has a unique composition. For a subset of the samples, Nb-Sn was selectively etched away at an etching rate of 6 ± 1 nm/s using an aqueous solution of 3 vol.% hydrofluoric and 19 vol.% nitric acid. The sample composition was investigated with a scanning electron microscope with an X-ray energy dispersive spectroscopy detector. Surface and cross-section morphologies were investigated using scanning electron microscopy and scanning transmission electron microscopy, revealing a dense columnar poly-crystalline grain structure. X-ray diffraction measurements indicate a highly textured film that is (100) oriented out-of-plane and random in-plane. The critical temperature Tc (ranging from 9.8 to 17.9 K), critical magnetic field μ0Hc2 (ranging from 12.5 to 31.3 T), residual resistivity ratio (RRR), and normal state resistivity ρ0 were measured and found to be broadly consistent with literature data on bulk Nb3Sn.