Effect of γ-irradiation on polycrystalline Tl1Ba2Ca2Cu3Oy superconductor

B. A. Albiss*, A. El-Ali, Kh Khasawinah, M. K. Hasan, I. Al-Omari, K. A. Azez, J. Shobaki

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Specimens of polycrystalline Tl1Ba2Ca2Cu3Oy superconductor (Tl-1223) have been irradiated at room temperature by γ-rays. The variations of the normal state resistance, transition width and the critical current densities with γ-irradiation up to about 400 MR were studied. The normal state resistivity ρ(T) increases gradually up to a dose of 100 MR, whereas at higher doses, the effect of irradiation becomes rather negligible. The transition temperature Tc decreases slightly and the transition temperature width ΔT broadens at doses below 100 MR with almost no change at higher doses up to 400 MR. At relatively low temperatures and low γ-doses, the critical current densities Jc(T) increase with γ-irradiation, while the effect of γ-irradiation at temperatures very close to Tc is rather negligible. Obtained results confirmed the high sensitivity of (Tl-1223) superconductor to γ-irradiation at relatively low γ-doses. These results are discussed and explained in terms of the effect of γ-rays on the weak links and Josephson junctions between the grains.

Original languageEnglish
Pages (from-to)324-327
Number of pages4
JournalPhysica B: Physics of Condensed Matter
Volume321
Issue number1-4
DOIs
Publication statusPublished - Aug 2002

Keywords

  • Critical current density
  • Gamma irradiation
  • Resistivity
  • Tl-1223

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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