Transport, microstructure and mechanical properties of Au diffusion-doped Bi-2223 superconductors

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dc.authorid0000-0003-3183-7017en_US
dc.authorid0000-0003-0622-3355
dc.authorid0000-0002-3944-0367
dc.contributor.authorNursoy, Mustafa
dc.contributor.authorYılmazlar, Mustafa
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorBelenli, İbrahim
dc.date.accessioned2021-06-23T19:25:48Z
dc.date.available2021-06-23T19:25:48Z
dc.date.issued2008
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.departmentBAİBÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümü
dc.description.abstractWe have investigated the effect of the Au-diffusion on the mechanical and transport properties of the (Bi,Pb)(2)Sr(2)Ca(2)Cu(3)Oy (Bi-2223) superconducting samples with different annealing times of 10, 20 and 50 It. The samples are prepared by the conventional solid-state reaction method in the polycrystalline bulk form. Doping of Bi-2223 was carried out by means of Au diffusion during sintering from an evaporated An film on pellets. The experimental works in this study consist of dc electrical resistivity and critical current density measurements for electrical and superconducting properties, microhardness measurements for mechanical properties, powder X-ray diffraction (XRD) for phase analyses (phase ratio) and lattice parameters, and scanning electron microscopy (SEM) for microstructure examination. These measurements showed that Au-doping, in comparison with the undoped samples, increased the critical transition temperature, critical current density and enhanced formation of high-T-c, phase. Additionally, microhardness and grain size were also improved with increasing amount of diffusion. Moreover, the diffusion-annealing time decreased the number and size of voids and increased the transition temperature. The experimental results of microhardness measurements were analyzed using the Kick's law, modified proportional specimen resistance (MPSR) model and the Hays-Kendall (HK) approach. Kick's law did not give useful knowledge of the origin of the indentation size effect. It was observed that the load independent microhardness values were determined based on the MPSR and HK models, and found to be similar with each other. The possible reasons for the observed enhancement in transport and mechanical properties due to An diffusion are discussed. (C) 2007 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jallcom.2007.04.282
dc.identifier.endpage406en_US
dc.identifier.issn0925-8388
dc.identifier.issue1-2en_US
dc.identifier.scopus2-s2.0-43749109785en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage399en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2007.04.282
dc.identifier.urihttps://hdl.handle.net/20.500.12491/6248
dc.identifier.volume459en_US
dc.identifier.wosWOS:000257006300076en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorNursoy, Mustafa
dc.institutionauthorTerzioğlu, Cabir
dc.institutionauthorBelenli, İbrahim
dc.language.isoenen_US
dc.publisherElsevier B.V. Allen_US
dc.relation.ispartofJournal Of Alloys And Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAu Diffusionen_US
dc.subjectMicrohardnessen_US
dc.subjectISEen_US
dc.subjectBi-2223en_US
dc.subjectMPSR model and HK modelen_US
dc.titleTransport, microstructure and mechanical properties of Au diffusion-doped Bi-2223 superconductorsen_US
dc.typeArticleen_US

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