Microwave measurements of the high magnetic field vortex motion pinning parameters in Nb3Sn
- 25 November 2020
- journal article
- research article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 34 (1), 014003
- https://doi.org/10.1088/1361-6668/abc05d
Abstract
The high frequency vortex motion in Nb3Sn was analyzed in this work up to 12 T. We used a dielectric loaded resonator tuned at 15 GHz to evaluate the surface impedance Z of a Nb3Sn bulk sample (24.8 at.%Sn). From the field induced variation of Z, the high frequency vortex parameters (the pinning constant k p , the depinning frequency ν p and the flux flow resistivity ρ ff ) were obtained over a large temperature and field range; their field and temperature dependencies were analyzed. Comparison with other superconducting materials shows that high frequency applications in strong magnetic fields are also feasible with Nb3Sn. In the present work, we report the first measurements about the microwave response in Nb3Sn in strong magnetic fields.Keywords
This publication has 78 references indexed in Scilit:
- A review of the properties of Nb3Sn and their variation with A15 composition, morphology and strain stateSuperconductor Science and Technology, 2006
- Nonmonotonic temperature dependence of the experimentally determined vortex-creep activation energy in disordered high-temperature superconductorsPhysical Review B, 2004
- High-quality Nb3Sn thin films on sapphire prepared by tin vapor diffusionJournal of Applied Physics, 1997
- Linear a.c. response of high-Tcsuperconductors and the irreversibility linePhysica Scripta, 1992
- Theory of collective flux creepPhysical Review Letters, 1989
- Effect of atomic ordering and composition changes on the electrical resistivity of Nb3Al, Nb3Sn, Nb3Ge, Nb3Ir, V3Si and V3GaIEEE Transactions on Magnetics, 1987
- On properties of superconducting Nb3Sn used as coatings in RF cavitiesIEEE Transactions on Magnetics, 1977
- The interaction distance between flux lines and pinning centresJournal of Physics C: Solid State Physics, 1971
- An electron microscope investigation of the flux pinning centres in superconducting V3Ga tapesJournal of the Less Common Metals, 1969
- Energy Gap of SuperconductingNb3SnPhysical Review B, 1967