Influence of gold diffusion-doped on phase formation, superconducting and microstructure properties of Bi1.8Pb0.35Sr 1.9Ca2.1Cu3Oy superconductors

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dc.authorid0000-0002-0391-5551
dc.authorid0000-0002-9810-2659
dc.authorid0000-0002-3944-0367
dc.authorid0000-0002-9124-3862
dc.contributor.authorÖzgür, Öztürk
dc.contributor.authorAkdoğan, Mustafa
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorGencer, Ali
dc.date.accessioned2021-06-23T18:52:13Z
dc.date.available2021-06-23T18:52:13Z
dc.date.issued2009
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractWe report on low-field magnetic properties of gold diffusion-doped Bi 1.8Pb0.35Sr1.9Ca2.1Cu 3Oy superconducting bulk samples by performing ac susceptibility measurements. The undoped samples were prepared by the standard solid-state reaction method. Doping of Bi1.8Pb0.35Sr 1.9Ca2.1Cu3Oy was carried out by means of Au-diffusion during sintering from an evaporated gold film on pellets. To investigate the effect of gold-diffusion and diffusion-annealing duration on transport, magnetic and microstructure properties of the superconducting samples we performed magnetoresistivity, scanning electron microscopy (SEM) and X-ray diffraction (XRD) measurements. The ac susceptibility as a function of temperature measurements were carried out at different values of the ac magnetic field amplitudes (Hac) in the range between 20A/m and 320 A/m for 211 Hz. The imaginary part of ac susceptibility measurements is used to calculate intergranular critical current density Jc(Tp) using the Bean Model. Jc(Tp) is seen to increase from 60 A cm -2 to 90 A cm-2 with increasing diffusion-annealing time from 10 h to 50 h. The peak temperature, Tp, in the imaginary part of the ac susceptibility is shifted to a lower temperature with decreasing diffusion-annealing duration as well as increasing ac magnetic fields. The force pinning density (?jj (0)) increased with increasing diffusion annealing time. The value of Tc in gold-diffused samples, in comparison with the undoped samples, increased from 100 0.2 K to 104 0.2 K. It was observed that the value of Tc-offset of the gold-doped samples enhanced with further increasing diffusion-annealing duration. XRD patterns and SEM micrographs are used to obtain information about Bi-2223 phase ratio, lattice parameters and grain size of the samples. Gold doping enhanced the formation high-Tc phase and increased the grain size. The possible reasons for the observed improvements in transport, microstructure and magnetic properties due to Au diffusion and diffusion-annealing time were discussed. © 2009 IOP Publishing Ltd.en_US
dc.identifier.doi10.1088/1742-6596/153/1/012024
dc.identifier.issn1742-6588
dc.identifier.scopus2-s2.0-65749115114en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1088/1742-6596/153/1/012024
dc.identifier.urihttps://hdl.handle.net/20.500.12491/4172
dc.identifier.volume153en_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAkdoğan, Mustafa
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.ispartofJournal of Physics: Conference Seriesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBi1.8Pb0.35Sr 1.9Ca2.1Cu3Oyen_US
dc.subjectScanning Electron Microscopy
dc.subjectSuperconducting
dc.subjectMicrostructure
dc.titleInfluence of gold diffusion-doped on phase formation, superconducting and microstructure properties of Bi1.8Pb0.35Sr 1.9Ca2.1Cu3Oy superconductorsen_US
dc.typeArticleen_US

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