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dc.contributor.authorVerma, P K-
dc.contributor.authorKaipamangalath, A-
dc.contributor.authorVarma, M R-
dc.contributor.authorBai, V S-
dc.date.accessioned2024-04-04T12:27:21Z-
dc.date.available2024-04-04T12:27:21Z-
dc.date.issued2024-01-01-
dc.identifier.citationIEEE Transactions on Applied Superconductivity; 34(1):8000112en_US
dc.identifier.urihttps://ieeexplore.ieee.org/document/10316619-
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/4809-
dc.description.abstractNano-tungsten trioxide (WO 3 ) particles were introduced homogeneously into Bi 1.2 Pb 0.3 Sr 1.54 Ca 2.06 Cu 3 O y (Bi 2223) superconductor matrix by a sol-casting technique and their effect on flux pinning properties was studied. To prevent W substitution at a lattice site of the matrix phase, WO 3 nanoparticles were added to processed Bi 2223 powders, which helped to retain transition temperature ( Tc ) near 105 K. The magnetic properties were obtained in the temperature ( T ) range of 10 to 77 K and up to 9 T magnetic fields ( B ). The temperature and field dependences of critical current densities ( Jc ) and the flux pinning force densities ( Fp ) were examined in terms of the possible sources of flux pinning in the samples. The addition of low concentrations (0.1 wt.%) of nano WO 3 led to effective pinning and enhancement of current densities to higher fields, up to 77 K, compared to Bi 2223. Analysis of Fp(B) curves showed normal surface pinning at platelet/grain boundary defects to be dominant at low fields at all temperatures, while additional pinning from WO 3 is observed at higher fields. The limiting fields where pinning from different mechanisms vanishes are estimated using scaling laws. Irreversibility fields ( B irr ) estimated from the high field region of Fp(B) curves suggest that substantial pinning is caused by nano WO 3 addition to Bi 2223.en_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.subjectsuperconducting transition temperatureen_US
dc.subjectflux pinningen_US
dc.subjectnanoparticlesen_US
dc.subjectpowdersen_US
dc.subjectleaden_US
dc.subjecthigh-temperature superconductorsen_US
dc.subjectlatticesen_US
dc.titleNonreactive Nano WO3 Inclusions to Enhance Flux Pinning in Bi-2223 Superconductor Compositesen_US
dc.typeArticleen_US
Appears in Collections:2024



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