Effects of 300 MeV Au+24 ion irradiation on superconductivity in YBa2Cu3O7 epitaxial films
- 24 August 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (8) , 985-987
- https://doi.org/10.1063/1.108462
Abstract
We report the effects of 300 MeV gold ion irradiation on the transition temperature (Tc) and critical current density (Jc) of YBa2Cu3O7 epitaxial films. The radiation at a dose as low as 5.6×1010 ions/cm2 decreases the zero field Tc and Jc. However, the response of the mixed state in 1–8 T field remains relatively unchanged up to a dose of ∼9×1010 ions/cm2. We argue that the stiffness of the flux lines in a film geometry and the pinning sites distributed at a length scale much smaller than that of the ion‐induced defects are responsible for this null result.Keywords
This publication has 13 references indexed in Scilit:
- Vortex-pair nucleation at defects: A mechanism for anomalous temperature dependence in the superconducting screening lengthPhysical Review B, 1991
- Effect of 5.3-GeV Pb-ion irradiation on irreversible magnetization in Y-Ba-Cu-O crystalsPhysical Review B, 1991
- Vortex confinement by columnar defects in crystals: Enhanced pinning at high fields and temperaturesPhysical Review Letters, 1991
- Defect independence of the irreversibility line in proton-irradiated Y-Ba-Cu-O crystalsPhysical Review Letters, 1990
- Anisotropic enhancement of the critical current density of epitaxial YBa2Cu3O7−x films by fast neutron irradiationPhysica C: Superconductivity and its Applications, 1990
- Critical currents in proton-irradiated single-crystal Ba2YCu3O7−δApplied Physics Letters, 1990
- Effects of 173 MeV 129 Xe Ion Irradiation on Epitaxial YBa 2 Cu 3 O
x
FilmsEurophysics Letters, 1990
- I n s i t u grown YBa2Cu3O7−d thin films from single-target magnetron sputteringApplied Physics Letters, 1989
- Controllable reduction of critical currents in YBa2Cu3O7−δ filmsApplied Physics Letters, 1988
- Critical currents associated with the interaction of commensurate flux-line sublattices in a perforated Al filmApplied Physics Letters, 1978