Neutron Irradiation of Sm-1111

Abstract

SmFeAsO${}_{1-x}$F${}_x$ was irradiated in a fission reactor to a fast (E > 0.1 MeV) neutron fluence of 4x10^$21$ m${}^{-2}$. The introduced defects increase the normal state resistivity due to a reduction in the mean free path of the charge carriers. This leads to an enhancement of the upper critical field at low temperatures. The critical current density within the grains, Jc, increases upon irradiation. The second maximum in the field dependence of Jc disappears and the critical current density becomes a monotonically decreasing function of the applied magnetic field.

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Cited by in corpus (12)

• Recent advances in iron-based superconductors toward applications
• Large transport critical currents of powder-in-tube Sr0.6K0.4Fe2As2/Ag superconducting wires and tapes
• Intergrain current flow in a randomly oriented polycrystalline SmFeAsO0.85 oxypnictide
• Mechanochemical synthesis of pnictide compounds and superconducting Ba0.6K0.4Fe2As2 bulks with high critical current density
• Evidence for electromagnetic granularity in polycrystalline Sm1111 iron-pnictides with enhanced phase purity
• Neutron-irradiation effects in LaO0.9F0.1FeAs superconductor
• Anisotropic critical currents in FeSe0.5Te0.5 films and the influence of neutron irradiation
• Disorder effects on the superconducting properties of BaFe${}_{1.8}$Co${}_{0.2}$As${}_2$ single crystals
• Effect of columnar defects on the pinning properties of NdFeAsO0.85 conglomerate particles
• Disorder effects and current percolation in FeAs based superconductors
• Superconductivity in iron silicide Lu2Fe3Si5 probed by radiation-induced disordering
• Critical current anisotropy in Nd-1111 single crystals and the infuence of neutron irradiation