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Enhancement of Flux Pinning in Neutron Irradiated MgB$_{2}$ Superconductor

E. Babic·Dj. Miljanic·K. Zadro·I. Kusevic·Z. Marohnic·Dj. Drobac·X. L. Wang·S. X. Dou
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Abstract

m-H loops for virgin and neutron irradiated bulk and powder samples of MgB_{2} were measured in the temperature range 5-30 K in magnetic field B<= 1 T. The irradiation at thermal neutron fluences 9*10^{13} and 4.5*10^{14} cm^{-2} caused very small enhancement of m-H loops at lower temperatures (T<20 K), whereas the effect at high temperatures was unclear due to difficulty in achieving exactly the same measurement temperature prior and after irradiation. However, the irradiation at 4.5*10^{15} cm^{-2} produced clear enhancement of m-H loops (hence J_{c}) at all investigated temperatures, which provides the evidence for the enhancement of flux pinning in MgB_{2} due to ion tracks resulting from n+^{10}B reaction. The potential of this technique for the enhancement of flux pinning in high temperature superconductors is briefly discussed.

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E. Babic, Dj. Miljanic, K. Zadro, I. Kusevic, Z. Marohnic, Dj. Drobac, X. L. Wang, S. X. Dou. 2001-12-10. Enhancement of Flux Pinning in Neutron Irradiated MgB$_{2}$ Superconductor. https://arxiv.org/abs/cond-mat/0112170

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