Solubility limit of tetravalent Zr nanoparticles in Bi-2223 crystal lattice and evaluation of fundamental characteristic properties of new system

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dc.authorid0000-0002-0759-0598en_US
dc.authorid0000-0003-0304-1097en_US
dc.authorid0000-0002-5177-3703en_US
dc.authorid0000-0002-3944-0367
dc.authorid0000-0001-8058-1690
dc.contributor.authorSarıtekin, Namık Kemal
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorPakdil, Murat
dc.contributor.authorTurğay, Tahsin
dc.contributor.authorYıldırım, Gürcan
dc.date.accessioned2021-06-23T19:43:55Z
dc.date.available2021-06-23T19:43:55Z
dc.date.issued2016
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractIn this comprehensive work, we focus sensitively on the changes of microstructural, electrical, superconducting and mechanical properties belonging to the bulk Bi1.7Pb0.4Sr2.0Ca2.0ZrxCu3.1Oy materials with the different Zr nanoparticles (0 a currency sign x a currency sign 1.0) inserted in the superconducting matrix. The characterizations of the materials prepared are experimentally performed by bulk density, dc resistivity (rho-T), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), electron dispersive X-ray (EDX) and Vickers microhardness (H (v) ) investigations. It is found that all the characteristics given above (especially superconducting properties) degrade considerably with the increment in the Zr addition level, and in fact they reach to the global minimum points in case of the maximum dopant level. The main reason of the rapid decrement in the electrical and superconducting properties stems from the presence of the localization problem in the Cu-O-2 consecutively stacked layers. Likewise, the Zr foreign addition increases the artificial random defects, dislocations and grain boundary weak-links in the superconducting system, even being favored by the SEM examinations. At the same time, the EDX surveys indicate that the Zr nanoparticles in the tetravalent state prefer to substitute for the divalent states of the Cu inclusions through the crystal structure as a result of their close ionic radius values (86 pm for Zr4+ ion and 87 pm for Cu2+ ion). Thus, the differentiation of the electronegativity reduces the mobile hole concentration in the Cu-O-2 slabs. Additionally, the XRD experimental findings show that there is a systematic decrement in the Bi-2223 (high) phase up to the Zr concentration level of x = 0.70 beyond which new characteristics peaks of ZrO2 appear immediately. This is in relation to the fact that the solubility limit corresponding to the Zr foreign impurity in the Bi-2223 system is about x = 0.70. Similarly, the regular decrement in both the c-axis length and crystallite size with the dopant confirms the deterioration of the superconducting properties. Furthermore, the dramatic reduction of the H (v) values stems from the suppression of the crystallinity and connection quality in the intergrain coupling of the superconducting samples exhibiting typical Indentation Size Effect behavior due to the existence of both elastic and plastic deformations in the system.en_US
dc.identifier.doi10.1007/s10854-015-3964-5
dc.identifier.endpage1865en_US
dc.identifier.issn0957-4522
dc.identifier.issn1573-482X
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-84956611312en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1854en_US
dc.identifier.urihttps://doi.org/10.1007/s10854-015-3964-5
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8881
dc.identifier.volume27en_US
dc.identifier.wosWOS:000369010900109en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorSarıtekin, Namık Kemal
dc.institutionauthorTerzioğlu, Cabir
dc.institutionauthorPakdil, Murat
dc.institutionauthorYıldırım, Gürcan
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.subjectZr Nanoparticlesen_US
dc.subjectCu–O2
dc.subjectScanning Electron Microscopy (SEM)
dc.subjectElectron Dispersive X-ray (EDX)
dc.subjectVickers Microhardness (Hv)
dc.titleSolubility limit of tetravalent Zr nanoparticles in Bi-2223 crystal lattice and evaluation of fundamental characteristic properties of new systemen_US
dc.typeArticleen_US

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