Point and extended defects in superconductors

I. M. Obaidat, H. P. Goeckner, B. A. Albiss, J. S. Kouvel

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The effect of point defects created by y-irradiation and extended defects created by Pb-ion irradiation on the behavior of the critical current density, Jc in several superconductors have been investigated. We have found a limitation of the role of both types of defects on enhancing Jc. We report an explanation of the effect of yirradiation and Pb-ion irradiation doses on Jc in these materials. The explanation is based on combining several competing mechanisms of irradiation which we believe to take place mainly in the regions of the grain boundaries. The influences of these mechanisms were found to vary with the irradiation dose level.

Original languageEnglish
Pages (from-to)837-844
Number of pages8
JournalCrystal Research and Technology
Issue number8
Publication statusPublished - Aug 2008


  • Columnar defects
  • Grain boundaries
  • Pb-ion irradiation
  • Point defects
  • Vortex pinning
  • γ-rays

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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