Laser drilling: enhancing superconducting joint of GdBa2Cu3O7-delta coated conductors
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Y. J. | - |
dc.contributor.author | Lee, M. W. | - |
dc.contributor.author | Oh, Y. K. | - |
dc.contributor.author | Lee, H. G. | - |
dc.date.accessioned | 2021-09-05T06:19:38Z | - |
dc.date.available | 2021-09-05T06:19:38Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-08 | - |
dc.identifier.issn | 0953-2048 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/97761 | - |
dc.description.abstract | While GdBa2Cu3O7-delta (GdBCO) coated conductors (CCs) have been proposed for superconducting applications, they have not been used in devices with persistent current mode (PCM) operation because of a lack of joining techniques. A superconducting joint of CCs, formed via melting diffusion and oxygenation annealing, offers no electrical resistance between the CCs, thus establishing a superconducting closed loop for PCM operation. Because superconductivity degrades with oxygen out-diffusion during melting diffusion, oxygenation annealing allows oxygen diffusion into the GdBCO lattices. As effective oxygenation annealing requires oxygen pathways in the joint, low solubility and diffusivity of oxygen in the buffer and CC substrate hinder full superconductivity recovery. Here we show a laser-drilling technique to produce microholes as conduits on the surfaces of GdBCO CCs' to promote oxygen in-diffusion, which resulted in reduced superconductivity recovery time. Superconductivity was fully recovered after laser drilling, melting diffusion at 850 degrees C for 1 min, and oxygenation annealing at 500 degrees C for 350 h. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | YBCO | - |
dc.subject | PERFORMANCE | - |
dc.subject | TRANSITION | - |
dc.subject | DIFFUSION | - |
dc.subject | PROGRESS | - |
dc.subject | MAGNETS | - |
dc.subject | OXYGEN | - |
dc.subject | TESLA | - |
dc.title | Laser drilling: enhancing superconducting joint of GdBa2Cu3O7-delta coated conductors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, H. G. | - |
dc.identifier.doi | 10.1088/0953-2048/27/8/085008 | - |
dc.identifier.scopusid | 2-s2.0-84904705810 | - |
dc.identifier.wosid | 000339329300011 | - |
dc.identifier.bibliographicCitation | SUPERCONDUCTOR SCIENCE & TECHNOLOGY, v.27, no.8 | - |
dc.relation.isPartOf | SUPERCONDUCTOR SCIENCE & TECHNOLOGY | - |
dc.citation.title | SUPERCONDUCTOR SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 27 | - |
dc.citation.number | 8 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | YBCO | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | DIFFUSION | - |
dc.subject.keywordPlus | PROGRESS | - |
dc.subject.keywordPlus | MAGNETS | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | TESLA | - |
dc.subject.keywordAuthor | GdBCO coated conductors | - |
dc.subject.keywordAuthor | laser drilling | - |
dc.subject.keywordAuthor | oxygen pathways | - |
dc.subject.keywordAuthor | persistent current mode operation | - |
dc.subject.keywordAuthor | superconducting joint | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.