Oxygen and hydrogen plasma effects on the MgB2 superconductivity

被引：0
作者：
Jung, J. -K. [1 ,2 ]
Lee, K. W. [1 ,2 ]
Lee, W. [1 ,2 ]
Lee, Cheol Eui [1 ,2 ]
Noh, S. J. [3 ]
Kim, H. S. [3 ]
机构：
[1] Korea Univ, Dept Phys, Seoul 136713, South Korea
[2] Korea Univ, Inst Nano Sci, Seoul 136713, South Korea
[3] Dankook Univ, Dept Appl Phys, Yongin 448701, South Korea
来源：
CURRENT APPLIED PHYSICS | 2011年 / 11卷 / 03期
关键词：
MgB$_2$ superconductor; Plasma effects; Magnetic properties; Defects; CRITICAL-CURRENT DENSITY; ENHANCEMENT; FIELD;
D O I：
10.1016/j.cap.2010.09.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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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页码：555 / 558
页数：4
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