Effect of postannealing processes on the properties of hot-pressed Bi2Sr2Ca1Cu1.75Na0.25Oy (Bi-2212) ceramics

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dc.authoridOZKURT, BERDAN/0000-0002-7837-9773
dc.authoridSotelo Mieg, Andres E./0000-0001-7056-0546
dc.contributor.authorOzkurt, Berdan
dc.contributor.authorMadre, M. A.
dc.contributor.authorSotelo, A.
dc.date.accessioned2025-03-17T12:27:36Z
dc.date.available2025-03-17T12:27:36Z
dc.date.issued2023
dc.departmentTarsus Üniversitesi
dc.description.abstractIn the present work, the effect of different annealing-time on the properties of Bi2Sr2Ca1Cu1.75Na0.25Oy (Bi-2212) superconducting compound is presented. First, the samples were produced by hot-pressing method under 33 MPa pressure at 750 degrees C in accordance with previous works. After annealing, the samples were kept at 840 degrees C for 15, 30 and 60 h, respectively, for postannealing process. XRD results demonstrate the formation of Bi-2212 phase in large amount in all samples. SEM images show the formation of different grain morphologies depending on the postannealing time. The sample postannealed for 60 h at 840 degrees C has the highest superconducting transition temperature (T-c, onset), 91 K, obtained from M-T measurements. The magnetic properties of samples have been investigated using M-H hysteresis loops at 15 K in the range - 1.6 x 10(6) to + 1.6 10(6) A/m. The widest M-H curves were obtained in the postannealed sample for 60 h at 840 degrees C, probably as a result of both the improvement of crystallinity, cleaner grain boundaries and better grain orientation. In addition, the widest hysteresis curve observed in that sample in the entire applied magnetic field range is an indication that it has strong pinning behavior. The critical current density (J(c)) was investigated via Bean's model from these data. Finally, the sample postannealed at 840 degrees C for 60 h reached a J(c) value of 2.903 x 10(6) A/cm(2) at H = 1.9 T and T = 15 K, which is, approximately, 44% higher than the determined in annealed samples (2.015 x 10(6) A/cm(2)).
dc.identifier.doi10.1007/s10854-023-10650-0
dc.identifier.issn0957-4522
dc.identifier.issn1573-482X
dc.identifier.issue15
dc.identifier.scopus2-s2.0-85160209237
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s10854-023-10650-0
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2341
dc.identifier.volume34
dc.identifier.wosWOS:000994317900003
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Materials Science-Materials in Electronics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectCa-Cu-O
dc.subjectSuperconducting Properties
dc.subjectChemical-Composition
dc.subjectMagnetic-Properties
dc.subjectPhase
dc.subjectRods
dc.titleEffect of postannealing processes on the properties of hot-pressed Bi2Sr2Ca1Cu1.75Na0.25Oy (Bi-2212) ceramics
dc.typeArticle

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