TARANTINI , C

In this letter, we present the effect of neutron irradiation up to fluences of 1.431020 cm−2 on the superconducting properties of MgB2. In order to obtain a homogeneously distributed disorder, the experiment was carried out on bulk samples prepared with the 11B isotope. Up to fluences of 1018 cm−2, the critical temperature sTcd is slightly...

In this work, we investigate the temperature dependence of the upper critical field, dH c2/dT, in an increasingly disordered NdFeAsO0.7F0.3 (NdFeAs(O,F)) single crystal that has been progressively irradiated up to a 5.25 ×1016 cm- 2 total particle dose. For the H||ab-plane, dH c2/dT does not vary remarkably with irradiation, while for the...