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Título

Improvement of the critical current density on in situ PIT processed Fe/MgB2 wires by oleic acid addition

AutorMartínez, Elena; Navarro, Rafael; Andrés Gimeno, José Manuel
Fecha de publicación2013
EditorInstitute of Physics Publishing
CitaciónSuperconductor Science and Technology 26(12): 125017 (2013)
ResumenHigh-performance Fe-sheathed MgB2 monocore wires have been fabricated by an in situ method using cheap oleic acid additions as a reliable C source for B lattice substitution. We have analysed the cases of soaking B or Mg + B powders in oleic acid and the influence of the heat treatments used at different steps of wire manufacturing on their superconducting properties. X-ray diffraction, electronic microscopy, and thermogravimetric analysis, together with magnetic and electric transport measurements, have been used to characterize the wires. Doping with oleic acid considerably improves the critical current density, Jc, at medium and high magnetic fields at 5 and 20 K, without deterioration of Jc at low magnetic fields.
Versión del editorhttps://doi.org/10.1088/0953-2048/26/12/125017
URIhttp://hdl.handle.net/10261/117652
Identificadoresdoi: 10.1088/0953-2048/26/12/125017
issn: 0953-2048
e-issn: 1361-6668
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