| 脉冲磁场处理对碳纳米管掺杂MgB2线材临界电流密度的影响 |
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| 引用本文： | 陈荣华,朱明原,李 瑛,李文献,金红明,窦士学.脉冲磁场处理对碳纳米管掺杂MgB2线材临界电流密度的影响[J].物理学报,2006,55(9):4878-4882. |
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| 作者姓名： | 陈荣华 朱明原 李 瑛 李文献 金红明 窦士学 |
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| 作者单位： | (1)上海大学材料科学与工程学院，上海 200072; (2)伍伦贡大学电子材料与超导研究所，伍伦贡 2522，澳大利亚 |
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| 基金项目： | 国家自然科学基金(批准号：50471100)资助的课题. |
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| 摘 要： | 对碳纳米管(CNT)掺杂MgB2超导体磁场处理后的行为进行了研究. 结果表明，CNT掺杂MgB2超导体经5T脉冲磁场处理后临界电流密度Jc(H)在低磁场下提高了2—3倍，高场下提高一个数量级以上，扫描电镜结果显示CNT沿着处理磁场方向规则排列并且成为MgB2基体的形核中心和高效的磁通钉扎中心.
关键词：
2')" href="#">MgB2
碳纳米管
脉冲磁场处理
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| 关 键 词： | MgB2 碳纳米管 脉冲磁场处理 |
| 文章编号： | 1000-3290/2006/55(09)/4878-05 |
| 收稿时间： | 01 19 2006 12:00AM |
| 修稿时间： | 2006-01-192006-03-23 |
Effect of pulsed magnetic field on critical current in carbon-nanotube-doped MgB2 wires |
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| Chen Rong-Hu,Zhu Ming-Yuan,Li Ying,Li Wen-Xian,Jin Hong-Ming and Dou Shi-Xue.Effect of pulsed magnetic field on critical current in carbon-nanotube-doped MgB2 wires[J].Acta Physica Sinica,2006,55(9):4878-4882. |
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| Authors: | Chen Rong-Hu Zhu Ming-Yuan Li Ying Li Wen-Xian Jin Hong-Ming and Dou Shi-Xue |
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| Institution: | 1 Department of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;2 Institute for Superconducting and Electronic Materials, University of Wollongong , Northfields Ave. Wollongong , NSW 2522 Australia |
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| Abstract: | This study is about carbon-nanotube (CNT)-doping of MgB2 superconductor processed under the magnetic field. The Jc(H) for CNT doped sample increased by a factor of 2—3 in low filed and more than an order of magnitude in high field after processing in magnetic field. The alignment of CNT along the processing field direction was observed by SEM. |
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| Keywords: | MgB2 carbon nanotube pulsed magnetic field processing |
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