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Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization
Stacks of superconducting REBCO tapes (or “stacks”) can trap high magnetic fields, above 17 T. However, relatively low oscillating transverse magnetic fields can fully demagnetize the stacks. This is an issue if the stacks act as poles in the rotor of a superconducting motor, for instance. Here, we...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9852465/ https://www.ncbi.nlm.nih.gov/pubmed/36658177 http://dx.doi.org/10.1038/s41598-023-27996-4 |
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author | Li, Shuo Pardo, Enric |
author_facet | Li, Shuo Pardo, Enric |
author_sort | Li, Shuo |
collection | PubMed |
description | Stacks of superconducting REBCO tapes (or “stacks”) can trap high magnetic fields, above 17 T. However, relatively low oscillating transverse magnetic fields can fully demagnetize the stacks. This is an issue if the stacks act as poles in the rotor of a superconducting motor, for instance. Here, we study the drastic suppression of cross-field demagnetization in stacks by soldering the tapes at the ends using a normal conductor. In particular, we analyzed by numerical modeling a stack of five REBCO thin films connected at the ends by resistances. The computed trapped field of a stack with zero solder resistance decays very fast at the beginning but then tends to stabilize to relatively high values, while the trapped field of an isolated stack (infinite resistance at the ends) decays further (it decays to zero if the transverse field is above the parallel penetration field). For intermediate solder resistances, the stable value of the trapped magnetic field is in between those of the isolated and zero-resistance configurations. Since the stable trapped field in soldered stacks increases with the number of tapes, stacks of sufficiently high number of soldered tapes could be immune to cross-field demagnetization. This opens the gate for a new kind of superconductors that mostly behave as bulks, especially if the stacks are made of delaminated tapes or it is possible to solder the tapes by very low resistance. |
format | Online Article Text |
id | pubmed-9852465 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-98524652023-01-21 Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization Li, Shuo Pardo, Enric Sci Rep Article Stacks of superconducting REBCO tapes (or “stacks”) can trap high magnetic fields, above 17 T. However, relatively low oscillating transverse magnetic fields can fully demagnetize the stacks. This is an issue if the stacks act as poles in the rotor of a superconducting motor, for instance. Here, we study the drastic suppression of cross-field demagnetization in stacks by soldering the tapes at the ends using a normal conductor. In particular, we analyzed by numerical modeling a stack of five REBCO thin films connected at the ends by resistances. The computed trapped field of a stack with zero solder resistance decays very fast at the beginning but then tends to stabilize to relatively high values, while the trapped field of an isolated stack (infinite resistance at the ends) decays further (it decays to zero if the transverse field is above the parallel penetration field). For intermediate solder resistances, the stable value of the trapped magnetic field is in between those of the isolated and zero-resistance configurations. Since the stable trapped field in soldered stacks increases with the number of tapes, stacks of sufficiently high number of soldered tapes could be immune to cross-field demagnetization. This opens the gate for a new kind of superconductors that mostly behave as bulks, especially if the stacks are made of delaminated tapes or it is possible to solder the tapes by very low resistance. Nature Publishing Group UK 2023-01-19 /pmc/articles/PMC9852465/ /pubmed/36658177 http://dx.doi.org/10.1038/s41598-023-27996-4 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Li, Shuo Pardo, Enric Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title | Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title_full | Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title_fullStr | Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title_full_unstemmed | Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title_short | Numerical modelling of soldered superconducting REBCO stacks of tapes suggests strong reduction in cross-field demagnetization |
title_sort | numerical modelling of soldered superconducting rebco stacks of tapes suggests strong reduction in cross-field demagnetization |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9852465/ https://www.ncbi.nlm.nih.gov/pubmed/36658177 http://dx.doi.org/10.1038/s41598-023-27996-4 |
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