The Influence of Nano-Sized SnO2 Doping on Physical and Magnetic Properties of the Bi2Sr2-x(SnO2)xCa1Cu1.75Na0.25Oy Superconductors

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dc.contributor.authorAytekin, Mehmet Ersin
dc.contributor.authorOzkurt, Berdan
dc.date.accessioned2025-03-17T12:27:36Z
dc.date.available2025-03-17T12:27:36Z
dc.date.issued2020
dc.departmentTarsus Üniversitesi
dc.description.abstractIn this study, we have investigated the effect of nano-sized SnO2 (50 nm) doping on the superconducting properties of Bi-2212 ceramics. In the first stage of the the experiment, the composition Bi2Sr2-xSnxCa1Cu1.75Na0.25Oy where x = 0, 0.05, 0.1 and 0.2 is selected due to the positive effect of sodium substitution on the grain sizes of the Bi-2212. X-ray diffraction results indicate that all the samples have considerable amount of Bi-2212 phases. Scanning electron microscopy (SEM) analysis of all samples clearly shows significant grain growth due to lower crystallization temperature formed by sodium. The lowest resistivity in the nano-sized SnO2-doped samples at 150 K is obtained for the sample of x = 0.05. The M-H hysteresis loops for all the samples have been measured within +/- 2 T externally applied magnetic field range at T = 15 and 25 K, respectively. The undoped and the sample with x = 0.05 SnO2 have both large M-H loops, indicating the improvement of flux pinning properties of the Bi-2212 as well as enhanced intergrain connectivity. However, the width of the hysteresis loop in samples including high (x > 0.05) SnO2 contents significantly decreased, indicating deterioration in superconducting properties of the Bi-2212 system. Additionally, the critical current densities (J(c)) of all the samples at 15 K are calculated from their hysteresis loop measurements by using Bean's critical state model. When compared with other samples, a slight increase in J(c) is obtained for x = 0.05 SnO2. The results indicate that the optimal contents of sodium (x = 0.25) and nano-sized SnO2 (x = 0.05) in the Bi-2212 system are effective for achieving enhanced superconductivity properties.
dc.description.sponsorshipBAP Research Fund of Mersin University, Mersin, Turkey [2018-3TP3-3086]
dc.description.sponsorshipThis work is supported by the BAP Research Fund of Mersin University, Mersin, Turkey, under Grant Contract No: 2018-3TP3-3086.
dc.identifier.doi10.1007/s10948-019-05336-w
dc.identifier.endpage970
dc.identifier.issn1557-1939
dc.identifier.issn1557-1947
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85075402909
dc.identifier.scopusqualityQ2
dc.identifier.startpage965
dc.identifier.urihttps://doi.org/10.1007/s10948-019-05336-w
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2336
dc.identifier.volume33
dc.identifier.wosWOS:000498202100001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Superconductivity and Novel Magnetism
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectBi2Sr2-x(SnO2)(x)Ca1Cu1
dc.subject75Na(0)
dc.subject25O(y)
dc.subjectXRD
dc.subjectSEM
dc.subjectMagnetic hysteresis loop
dc.titleThe Influence of Nano-Sized SnO2 Doping on Physical and Magnetic Properties of the Bi2Sr2-x(SnO2)xCa1Cu1.75Na0.25Oy Superconductors
dc.typeArticle

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