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dc.contributor.authorÇakır, Bakiye
dc.contributor.authorAydıner, Alev
dc.date.accessioned2020-03-04T10:33:17Z
dc.date.available2020-03-04T10:33:17Z
dc.date.issued2017en_US
dc.identifier.citationÇakır, B., & Aydıner, A. (2017). Structural and magnetic properties of the ring shaped 40 wt% Y211 added TSMG Y123 bulk superconductors welded by Ag2O added MPMG YBCO solder material. Journal of Materials Science: Materials in Electronics, 1. https://doi.org/10.1007/s10854-017-7636-5en_US
dc.identifier.urihttps://doi.org/10.1007/s10854-017-7636-5
dc.identifier.urihttps://hdl.handle.net/11494/1994
dc.description.abstractIn this study, two 40% Y211+Y123 bulk superconductors named Y-1 and Y-2 were fabricated by cold top seeding-melt-growth (TSMG) method by using a Nd123 seed with Y2O3 buffer layer placed to bottom of the pellets. The samples were welded with 17 wt% Ag2O+Y123 bulk sample named Y-Ag using as a solder material with a lower decomposition temperature and is produced by melt-powder-melt-growth process (MPMG) with Y2O3 buffer layer. Small specimens were cut above, below and on welding regions of the welded sample and were named as Y-a, Y-b and Y-ab, respectively. The welded solder material and welded samples were studied with XRD, SEM structural analysis, resistivity and magnetization measurements. The welding region was mechanically durable and supported the critical current density (J (c) ) across the joints. The interface of the parent bulk surface and the epitaxially nucleated interfaces are very clean and no residual liquid phases or defects are observed. The onset (T (c,onset) ) and offset (T (c,offset) ) critical temperatures and upper critical fields (H (c2) ) of the samples were evaluated from the magneto resistivity curves. Below the superconducting onset temperature of around 93 K, all samples exhibit sharp superconducting transition with their T (c) (R ae 0) of around 92 K at the 0 T magnetic field, showing that the welding process had no disruptive effect on T (c) . The H (c2) (0) values were 175, 133 and 91 T for Y-a, Y-ab and Y-b respectively. The calculated J (c) values of Y-a, Y-b and Y-ab were 3.71, 3.38 and 3.08 kA/cm(2), respectively, in 0 T field at 77 K. It was obtained that, the J (c) value of the welding region is the comparable to the welding bulks. As a result, we have succeeded in producing a strongly coupled superconducting YBa2Cu3O7-x joint by combining two bulk superconductors of TSMG Y123 by using a 17 wt% Ag2O added MPMG Y123 solder material.en_US
dc.description.sponsorshipKaradeniz Technical University Research Grant: BAP 02- 13583en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keywords Available]en_US
dc.titleStructural and magnetic properties of the ring shaped 40 wt% Y211 added TSMG Y123 bulk superconductors welded by Ag2O added MPMG YBCO solder materialen_US
dc.typearticleen_US
dc.relation.journalJournal of Materials Science: Materials in Electronicsen_US
dc.departmentAÇÜ, Sağlık Hizmetlerien_US
dc.identifier.volume28en_US
dc.identifier.issue22en_US
dc.identifier.startpage17098en_US
dc.identifier.endpage17106en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1007/s10854-017-7636-5en_US
dc.contributor.institutionauthor[0-Belirlenecek]en_US


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