Investigation of Lu effect on YBa2Cu3O7-delta superconducting compounds

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dc.authorid0000-0002-4127-7650en_US
dc.authorid0000-0002-5177-3703
dc.contributor.authorTürköz, Mustafa Burak
dc.contributor.authorNezir, Saffet
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorVarilci, Ahmet
dc.contributor.authorYıldırım, Gürcan
dc.date.accessioned2021-06-23T19:34:46Z
dc.date.available2021-06-23T19:34:46Z
dc.date.issued2013
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractThis study reports the effect of Lu addition on the microstructural and superconducting properties of YBa2LuxCu3O7-delta (Y123) superconducting samples with x = 0, 0.1, 0.3, 0.5 and 0.7 by means of X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), electron dispersive X-ray (EDX), electrical resistivity and transport critical current density (J(c)) measurements. The samples prepared by the liquid ammonium nitrate and derivatives are exposed to various annealing time (20, 40 and 60 h) and temperature (950, 960 and 970 A degrees C), and the best ambient for the sample fabrication is determined to be 970 A degrees C for 20 h. Zero resistivity transition temperatures (T-c), critical current densities (J(c)), variation of transition temperatures, hole-carrier concentration, grain size, lattice parameter, surface morphology, element distribution, crystallinity and resistivity (at room temperature) values of the bulk superconducting samples prepared at 970 A degrees C for 20 h are compared with each other. T-c and J(c) values of the samples are inferred from the dc resistivity and the critical current measurements, respectively. The results show that the T-c value of the pure sample is about 90.6 K while the sample doped with 0.1 wt% Lu has the maximum T-c value (92.5 K). However, beyond x = 0.1, the T-c value is observed to decrease toward to 83.5 K with increment in the Lu addition. Similarly, the J(c) values measured are found to reduce from 142 to 76 A/cm(2) with the addition. Moreover, XRD measurements show that both pure and Lu-doped samples exhibit the polycrystalline superconducting phase with the changing intensity of diffraction lines and contain Y123 and Y211 phase, confirming the incorporation of Lu atoms into the crystalline structure of the samples studied. At the same time, comparing of the XRD patterns of samples, the intensity ratio of the characteristic (110) and (013) peaks on the sample doped with 0.1 wt% Lu is more than that on the other samples prepared. Additionally, SEM images display that the sample doped with 0.1 wt% Lu obtains the best crystallinity, grain connectivity and largest grain size whereas the worst surface morphology is observed for the maximum doped sample (x = 0.7). Further, EDX results demonstrate that the Lu atoms doped are successfully introduced into the microstructure of the Y123 samples studied and the maximum Cu element level is observed for the sample doped with 0.1 wt%, explaining that why this sample obtains the best superconducting properties compared to others. According to all the results obtained, it is concluded that the 0.1 wt% Lu addition into the Y123 system improves the microstructural and superconducting properties of the samples studied.en_US
dc.identifier.doi10.1007/s10854-012-0846-y
dc.identifier.endpage905en_US
dc.identifier.issn0957-4522
dc.identifier.issn1573-482X
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-84878532940en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage896en_US
dc.identifier.urihttps://doi.org/10.1007/s10854-012-0846-y
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7618
dc.identifier.volume24en_US
dc.identifier.wosWOS:000314773800010en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTerzioğlu, Cabir
dc.institutionauthorYıldırım, Gürcan
dc.institutionauthorVarilci, Ahmet
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal Of Materials Science-Materials In Electronicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleInvestigation of Lu effect on YBa2Cu3O7-delta superconducting compoundsen_US
dc.typeArticleen_US

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