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dc.contributor.authorVinu, S-
dc.contributor.authorSarun, P M-
dc.contributor.authorShabna, R-
dc.contributor.authorBiju, A-
dc.contributor.authorSyamaprasad, U-
dc.date.accessioned2013-12-06T09:24:24Z-
dc.date.available2013-12-06T09:24:24Z-
dc.date.issued2010-
dc.identifier.citationMaterials Chemistry and Physics 119(1-2):135-139;15 Jan 2010en_US
dc.identifier.issn0254-0584-
dc.identifier.urihttp://ir.niist.res.in:8080/jspui/handle/123456789/906-
dc.description.abstractThe microstructure and electrical properties of the rare-earth Lu doped (Bi, Pb)-2212 superconductor have been investigated. The Lu concentration is varied from x = 0.000 to 0.150 in a general stoichiometry of Bi1.6Pb0.5Sr2-xLuxCa1.1Cu2.1O8+delta. The X-ray diffractometer and energy dispersive X-ray spectroscopy analyses show that Lu atoms are successfully substituted into the (Bi, Pb)-2212 system and they induce significant changes in the microstructure, hole concentration, critical temperature, self- and in-field critical current density of the system. The flux pinning force (F-P) calculated from the field dependant J(C) values shows that the irreversibility lines (IL) of the Lu substituted (Bi, Pb)-2212 shift towards higher fields to different extents depending on the Lu stoichiometry. The samples with x = 0.100 show a maximum F-P of 1395 +/- 1 x 10(3) N m(-3) as against 30 +/- 1 x 10(3) N m(-3) for the pure sample. The changes in hole concentration followed by very high enhancement of critical temperature (T-C), self-field J(C), J(C) (B) characteristics and F-P due to Lu substitution are of great scientific and technological significance and the results are explained on the basis of microstructural variation with respect to Lu stoichiometry, hole optimization and formation of point defects due to the doping of Lu atoms in Bi1.6Pb0.5Sr2-xLuxCa1.1Cu2.1O8+delta system.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectSingle-crystalsen_US
dc.subjectResistivity anisotropyen_US
dc.subjectSuperconductoren_US
dc.subjectFlux pinningen_US
dc.titleMicrostructure and transport properties of Bi1.6Pb0.5Sr2-xLuxCa1.1Cu2.1O8+delta superconductoren_US
dc.typeArticleen_US
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