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dc.contributor.author
Haberkorn, Nestor Fabian
dc.contributor.author
Kim, Jeehoon
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Gofryk, K.
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Ronning, F.
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Sefat, A. S.
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Fang, L.
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Welp, U.
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Kwok, W. K.
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Civale, L.
dc.date.available
2018-05-03T14:28:38Z
dc.date.issued
2015-05-08
dc.identifier.citation
Haberkorn, Nestor Fabian; Kim, Jeehoon; Gofryk, K.; Ronning, F.; Sefat, A. S.; et al.; Enhancement of the critical current density by increasing the collective pinning energy in heavy ion irradiated Co-doped BaFe2As2 single crystals; IOP Publishing; Superconductor Science And Technology; 28; 5; 8-5-2015; 55011-55018
dc.identifier.issn
0953-2048
dc.identifier.uri
http://hdl.handle.net/11336/43931
dc.description.abstract
We investigate the effect of heavy ion irradiation (1.4-GeV Pb) on the vortex matter in Ba(Fe0.92Co0.08)2As2 single crystals by SQUID magnetometry. The defects created by the irradiation are discontinuous amorphous tracks, resulting in an effective track density smaller than 25% of the nominal doses. We observe large increases in the critical current density (Jc), ranging from a factor of ~ 3 at low magnetic fields to a factor of ~ 10 at fields close to 1 T after irradiation with a nominal fluence of B= 3.5 T. From the normalized flux creep rates (S) and the Maley analysis, we determine that the Jc increase can be mainly attributed to a large increment in the pinning energy, from < 50 K to approx. 500 K, while the glassy exponent u changes from ~ 1.5 to < 1. Although the enhancement of Jc is substantial in the entire temperature range and S is strongly suppressed, the artificial pinning landscape induced by the irradiation does not modify significantly the crossover to fast creep in the field-temperature vortex phase diagram.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Single Crystals
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Superconductivity
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Irradiation
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Enhancement of the critical current density by increasing the collective pinning energy in heavy ion irradiated Co-doped BaFe2As2 single crystals
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-09T16:53:22Z
dc.journal.volume
28
dc.journal.number
5
dc.journal.pagination
55011-55018
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Haberkorn, Nestor Fabian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
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Fil: Kim, Jeehoon. Pohang University of Science and Techonlogy; Corea del Sur
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Fil: Gofryk, K.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
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Fil: Ronning, F.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
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Fil: Sefat, A. S.. Oak Ridge National Laboratory; Estados Unidos
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Fil: Fang, L.. Argonne National Laboratory; Estados Unidos
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Fil: Welp, U.. Argonne National Laboratory; Estados Unidos
dc.description.fil
Fil: Kwok, W. K.. Argonne National Laboratory; Estados Unidos
dc.description.fil
Fil: Civale, L.. Los Alamos National High Magnetic Field Laboratory; Estados Unidos
dc.journal.title
Superconductor Science And Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0953-2048/28/5/055011
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0953-2048/28/5/055011/meta
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