Effects of proton irradiation on the high-temperature superconducting system Y1−xPrxBa2Cu3O7−δ

Abstract

Magnetic measurements have been performed on polycrystalline samples of Y1−xPrxBa2Cu3O7−δ (x=0, 0.1, 0.2, and 0.3) before and after irradiation with 12 MeV protons. While magnetic hysteresis measurements reveal that the critical current density Jc increases for all the samples after irradiation, magnetic relaxation measurements show that the effective pinning energy Ueff increases only for the samples with x⩽0.1 and actually decreases for the samples with x⩾0.2.

Proton Irradiation Effects on Granular High-TC Superconductors: Gd1-xPrxBa2Cu3O7-?

“…In polycrystalline Y 1--x Pr x Ba 2 Cu 3 O 7--d , Paulius et al [27] have accomplished Pr-doping (x 0.3) and irradiation by protons with 12 MeV energy and obtained an increase in J c for all their samples. Our studies reveal the differences and similarities of these effects by using the two procedures to create defects in HTSCs.…”

Vortex liquid entanglement in twinnedYBa2Cu3O7Puig1, Galante2, González3 et al. 1999Phys. Rev. B341151View full textAdd to dashboardCite

“…3,4 This thermodynamic state of the flux-line lattice is easily destroyed, however, with the introduction of pointlike random disorder such as that generated by proton irradiation 5,6 or by the introduction of linearly correlated defects such as columnar tracks induced via heavy-ion irradiation [7][8][9] and naturally growing twin boundaries. 10,11 In the first case, an entanglement of vortex lines is promoted in the liquid state by vortex pinning in these defects.…”

Ion-beam modification of the magnetic properties ofGa1−xMnxAsepilayers

“…Consequently, there is a great amount of information on the characterization of defects produced by energetic ion beams. They have also been used in different contexts: the study of the effects of structural disorder in superconductors [12][13][14][15], ferromagnets [16], n-type and p-type [17] semiconductors.…”