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Oxygen and hydrogen plasma effects on the MgB2 superconductivity
- Authors
- Jung, J. -K.; Lee, K. W.; Lee, W.; Lee, Cheol Eui; Noh, S. J.; Kim, H. S.
- Issue Date
- May-2011
- Publisher
- ELSEVIER
- Keywords
- MgB$_2$ superconductor; Plasma effects; Magnetic properties; Defects
- Citation
- CURRENT APPLIED PHYSICS, v.11, no.3, pp.555 - 558
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 11
- Number
- 3
- Start Page
- 555
- End Page
- 558
- ISSN
- 1567-1739
- Abstract
- Oxygen and hydrogen plasma effects on the superconductivity in MgB2 were investigated. As a result, the critical current density was found to increase by the plasma treatments by an order of magnitude at zero applied magnetic field. The electrical resistivity showed a decrease in the superconducting transition temperature after the plasma treatments, whereas the magnetic susceptibility did not show a change in the transition temperature, indicating percolation of the supercurrent among the superconducting islands in the plasma-treated samples. (C) 2010 Elsevier B.V. All rights reserved.
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