Publication:
Relationship between characteristic length and average grain size in nanosize MgO added Bi-2212 superconductor ceramics

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dc.citedby0
dc.contributor.authorHamid N.A.en_US
dc.contributor.authorAsbullah M.S.N.en_US
dc.contributor.authorYahya S.Y.S.en_US
dc.contributor.authorHashim A.en_US
dc.contributor.authorid6604077116en_US
dc.contributor.authorid55602845400en_US
dc.contributor.authorid56603883800en_US
dc.contributor.authorid57219383730en_US
dc.date.accessioned2023-12-29T07:46:15Z
dc.date.available2023-12-29T07:46:15Z
dc.date.issued2012
dc.description.abstractIn the present work, Bi2Sr2CaCu2O 8 (Bi-2212)/MgO compound was prepared using the conventional solid-state reaction method. The powder of nanosize MgO particles was added to Bi-2212 superconductor with weight percentage of 3%, 5%, and 8%, respectively. The compound was sintered for 48 hours at 855deg;C in air. Besides the existence of a small amount of impurity phases, all the samples showed the Bi-2212 phase as the dominant phase. The temperature dependence of transport current density (Jc) in zero magnetic fields for each sample was measured from 40 K to transition temperature (Tc). It was found that the Jc value decreased with increasing temperature and this showed the consequence of thermal activated flux creep. Using the self-field approximation together with Jc dependence on temperature, we estimated that the characteristic length (Lc) associated with the pinning force is approximately the same as the average grain size (Rg) for the non-added sample and for sample with 8% nanosize MgO addition. In contrast, for samples with 3% and 5% addition, the results showed that Lc < Rg. This indicates that addition of 3% to 5% of nanosize MgO particles provides the optimum flux pinning centers for Bi-2212 superconductor ceramics. � 2012 American Institute of Physics.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1063/1.4757453
dc.identifier.epage139
dc.identifier.scopus2-s2.0-84874119591
dc.identifier.spage136
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84874119591&doi=10.1063%2f1.4757453&partnerID=40&md5=58612a36dd1086c451547492fbf628d5
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30281
dc.identifier.volume1482
dc.pagecount3
dc.sourceScopus
dc.sourcetitleAIP Conference Proceedings
dc.subjectBi-2212 phase superconductor
dc.subjectcharacteristic length
dc.subjectflux pinning centers
dc.subjectgrain size
dc.subjecttransport critical current density
dc.titleRelationship between characteristic length and average grain size in nanosize MgO added Bi-2212 superconductor ceramicsen_US
dc.typeConference paperen_US
dspace.entity.typePublication
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