Sung Ho Kim, Oun-Ho Park, et al.
Small
A series of YBa2Cu3O7-δ(YBCO) epitaxial films and crystals were irradiated with energetic heavy ions (Sn30+ or Ag29+ at energy 0.58 GeV) to produce columnar defects of highly disordered material. The irreversibility lines, B*(T), show enhancement due to the increased pinning. However, while B* does not exceed that observed in the highest-Jc as-grown epitaxial thin films, the values approach the proposed vortex melting line determined by a number of experiments on nearly defect-free single crystals. These results are interpreted in terms of the predicted upper limit of pinning energies in anisotropic superconductors, and the thermally-induced decoupling of vortex segments. © 1994.
Sung Ho Kim, Oun-Ho Park, et al.
Small
H.D. Dulman, R.H. Pantell, et al.
Physical Review B
Douglass S. Kalika, David W. Giles, et al.
Journal of Rheology
Sharee J. McNab, Richard J. Blaikie
Materials Research Society Symposium - Proceedings