Enhancing the pinning strengths in polycrystalline MgB2

I. M. Obaidat, B. A. Albiss, M. Gharaibeh, M. K. Hasan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The dependence of the critical current density, Jc, on the gamma irradiation dose in MgB2 polycrystalline superconducting specimens has been studied. The MgB2 samples were irradiated with 10 MR and 20 MR doses of γ-rays. The critical current density, Jc was found to be enhanced almost at all temperatures after irradiation. The enhancement of Jc was found to be linear with the irradiation dose at all temperatures. We also report on the correlation between the superconducting transition temperature and the residual resistivity ratio. Most of our results agree with the Testardi and Mooij rules which suggest that the dominant pairing mechanism of MgB2 is the phonon-mediated interaction.

Original languageEnglish
Pages (from-to)281-285
Number of pages5
JournalCrystal Research and Technology
Volume44
Issue number3
DOIs
Publication statusPublished - Mar 2009

Keywords

  • Critical current density
  • Gamma irradiation
  • MgB
  • Resistivity

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics

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