Vortex-glass phase transition and enhanced flux pinning in C4+-irradiated BaFe1.9Ni0.1As2 superconducting single crystals

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dc.contributor.authorShabhazi, Men_AU
dc.contributor.authorWang, XLen_AU
dc.contributor.authorGhorbani, SRen_AU
dc.contributor.authorIonescu, Men_AU
dc.contributor.authorShcherbakova, OVen_AU
dc.contributor.authorWells, FSen_AU
dc.contributor.authorPan, AVen_AU
dc.contributor.authorDou, SXen_AU
dc.contributor.authorChoi, KYen_AU
dc.date.accessioned2020-03-25T22:40:30Zen_AU
dc.date.available2020-03-25T22:40:30Zen_AU
dc.date.issued2013-08-13en_AU
dc.date.statistics2020-03-20en_AU
dc.description.abstractWe report the effects of C4+-irradiation on the superconducting properties of BaFe1.9Ni0.1As2 single crystal. The BaFe1.9Ni0.1As2 single crystal before and after C4+-irradiation was characterized by magnetic, magneto-transport and magneto-optical techniques over a wide range of magnetic fields (0–13 T) and temperatures (2–200 K). We demonstrate that the C4+-irradiation significantly enhances the in-field critical current density (by a factor of up to 1.5 at 5 K) and induces enhanced flux jumping at 2 K, with only a small degradation (by 0.5 K) of the critical temperature, Tc. The vortex phase diagram describing the evolution of the vortex-glass transition temperature with magnetic field and the upper critical field has been resolved for the C4+-irradiated sample. For temperatures below Tc, the resistivity curves and the pinning potential were found to show good scaling, using a modified model for vortex-liquid resistivity. The vortex state is three dimensional at temperatures lower than a characteristic temperature. Good agreement between the thermally activated flux flow model, which is usually employed to account for the resistivity in the vortex-liquid region, and the modified vortex-liquid model, has been observed. © 2013 IOP Publishingen_AU
dc.identifier.articlenumber095014en_AU
dc.identifier.citationShahbazi, M., Wang, X. L., Ghorbani, S. R., Ionescu, M., Shcherbakova, O. V., Wells, F. S., Pan, A. V., & Choi, K. Y. (2013). Vortex-glass phase transition and enhanced flux pinning in C4+-irradiated BaFe1.9Ni0.1As2 superconducting single crystals. Superconductor Science and Technology, 26(9), 095014. doi:10.1088/0953-2048/26/9/095014en_AU
dc.identifier.govdoc8987en_AU
dc.identifier.issn1361-6668en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleSuperconductor Science and Technologyen_AU
dc.identifier.urihttp://dx.doi.org/10.1088/0953-2048/26/9/095014en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9243en_AU
dc.identifier.volume26en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectPhase transformationsen_AU
dc.subjectVortex theoryen_AU
dc.subjectMagnetic fluxen_AU
dc.subjectSuperconductivityen_AU
dc.subjectCrystalsen_AU
dc.subjectIrradiationen_AU
dc.titleVortex-glass phase transition and enhanced flux pinning in C4+-irradiated BaFe1.9Ni0.1As2 superconducting single crystalsen_AU
dc.typeJournal Articleen_AU
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