Enhancing the pinning strengths in polycrystalline MgB2

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

doi:10.1002/crat.200800441

Enhancing the pinning strengths in polycrystalline MgB₂

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The dependence of the critical current density, J_c, 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, J_c was found to be enhanced almost at all temperatures after irradiation. The enhancement of J_c 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 language	English
Pages (from-to)	281-285
Number of pages	5
Journal	Crystal Research and Technology
Volume	44
Issue number	3
DOIs	https://doi.org/10.1002/crat.200800441
Publication status	Published - Mar 2009

Keywords

Critical current density
Gamma irradiation
MgB
Resistivity

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1002/crat.200800441

Cite this

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title = "Enhancing the pinning strengths in polycrystalline MgB2",

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.",

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T1 - Enhancing the pinning strengths in polycrystalline MgB2

AU - Obaidat, I. M.

AU - Albiss, B. A.

AU - Gharaibeh, M.

AU - Hasan, M. K.

PY - 2009/3

Y1 - 2009/3

N2 - 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.

AB - 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.

KW - Critical current density

KW - Gamma irradiation

KW - MgB

KW - Resistivity

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