Enhancement in the high-T-c phase of BSCCO superconductors by Nb addition

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dc.contributor.authorSozeri, Huseyin
dc.contributor.authorGhazanfari, Nader
dc.contributor.authorOzkan, Husnu
dc.contributor.authorKilic, Ahmet
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2007
dc.departmentNiğde ÖHÜ
dc.description.abstractPure and Nb2O5 added Bi1.6Pb0.4Nbx Sr2Ca2Cu3O delta superconductors ( x varies up to 0.30) were synthesized by the solid state reaction method. Structural and superconducting properties of the samples were investigated. The fraction of the high-T-c phase ( 2223) increases with Nb addition up to x = 0.10, for which a nearly single 2223 phase was obtained. The critical temperature of the samples increases from 96 to 104 K with doping up to x = 0.20 and a further increase in Nb decreases the Tc sharply. Similarly, there is a considerable enhancement in the critical current density ( jc) of the samples in the same doping range. Both AC susceptibility and transport measurements showed that the optimum Nb concentration is x = 0.20. The out- of- phase component of the AC susceptibility measurements showed that inter- grain coupling was enhanced up to the same doping level. Nb additions above x = 0.30 decrease the fraction of the high- Tc phase and degrade the superconducting properties. Present measurements indicate that x = 0.20 is the optimum Nb concentration in the BSCCO superconductor to enhance phase purity, inter- grain coupling and superconducting parameters ( Tc and j(c)).
dc.identifier.doi10.1088/0953-2048/20/6/007
dc.identifier.endpage528
dc.identifier.issn0953-2048
dc.identifier.issue6
dc.identifier.scopus2-s2.0-34249309911
dc.identifier.scopusqualityQ1
dc.identifier.startpage522
dc.identifier.urihttps://dx.doi.org/10.1088/0953-2048/20/6/007
dc.identifier.urihttps://hdl.handle.net/11480/5383
dc.identifier.volume20
dc.identifier.wosWOS:000247046400011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherIOP PUBLISHING LTD
dc.relation.ispartofSUPERCONDUCTOR SCIENCE & TECHNOLOGY
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleEnhancement in the high-T-c phase of BSCCO superconductors by Nb addition
dc.typeArticle

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