EDXRF measurements on gold diffusion-doped Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy

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dc.authorid0000-0002-3944-0367
dc.contributor.authorTerzioğlu, Cabir
dc.date.accessioned2021-06-23T19:25:47Z
dc.date.available2021-06-23T19:25:47Z
dc.date.issued2008
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractGold (Au) diffusion in superconducting Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy was investigated over the temperature range 500-800 degrees C by the energy dispersive X-ray fluorescence (EDXRF) technique. It is found that the Au diffusion coefficient decreases as the diffusion-annealing temperature decreases. The temperature dependences of Au diffusion coefficient in grains and over grain boundaries are described by the relations D-1 = 6.7 x 10(-5)exp(-1.19 eV/k(B)T) and D-2 = 9.7 x 10(-4)exp(- 1.09 eV/k(B)T), respectively. The diffusion doping of Bi-2223 by Au causes a significant increase of the lattice parameter c by about 0.19%. For the Au-diffused samples, dc electrical resistivity and transport critical cur-rent density measurements indicated the critical transition temperature increased from 100 to 104 K and the critical current density increased from 40 to 125 A cm(-2), in comparison with those of undoped samples. From scanning electron microscope (SEM) and X-ray diffraction (XRD) measurements it is observed that Au doping of the sample also improved the surface morphology and increased the ratio of the high-T-c phase to the low-T-c phase. The possible reasons for the observed improvement in microstructure and superconducting properties of the samples due to Au diffusion are also discussed. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.physb.2008.04.027
dc.identifier.endpage3325en_US
dc.identifier.issn0921-4526
dc.identifier.issue18en_US
dc.identifier.scopus2-s2.0-48749091564en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage3320en_US
dc.identifier.urihttps://doi.org/10.1016/j.physb.2008.04.027
dc.identifier.urihttps://hdl.handle.net/20.500.12491/6235
dc.identifier.volume403en_US
dc.identifier.wosWOS:000259626500065en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherElsevier B.V. Allen_US
dc.relation.ispartofPhysica B-Condensed Matteren_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAu Diffusionen_US
dc.subjectDiffusion Coefficienten_US
dc.subjectActivation Energyen_US
dc.subjectTransition Temperatureen_US
dc.titleEDXRF measurements on gold diffusion-doped Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oyen_US
dc.typeArticleen_US

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