| 超导体的交流磁化率测量 |
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| 引用本文： | 纪圣谋,丁世英,徐健健. 超导体的交流磁化率测量[J]. 低温物理学报, 2007, 29(3): 207-214 |
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| 作者姓名： | 纪圣谋 丁世英 徐健健 |
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| 作者单位： | 南京大学物理系,南京,210093;南京大学物理系,南京,210093;南京大学物理系,南京,210093 |
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| 摘 要： | 本文探讨利用交流磁化率研究超导电性.测量了MgB2样品的若干超导电参量,包括临界温度Tc,上临界磁场Hc2,临界电流密度Jc,不可逆场Hirr等与温度的关系,交流损耗与频率和温度的关系等.此外还简要介绍了交流磁化率在磁通动力学和非线性性质方面的研究方法.
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| 关 键 词： | 超导电性 交流磁化率 MgB2 |
| 修稿时间： | 2007-03-30 |
STUDY ON AC SUSCEPTIBILITY FOR SUPERCONDUCTORS |
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| Ji SHeng-mou,Ding SHi-ying,Xu Jian-Jian. STUDY ON AC SUSCEPTIBILITY FOR SUPERCONDUCTORS[J]. Chinese Journal of Low Temperature Physics, 2007, 29(3): 207-214 |
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| Authors: | Ji SHeng-mou Ding SHi-ying Xu Jian-Jian |
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| Affiliation: | Department of Physics, Nanjing University Nanjing 210093 |
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| Abstract: | This paper described how to study superconductivity by ac susceptibility(acs) measurements. Different acs curves of MgB2 samples, such as critical temperature Tc, upper critical magnetic field Hc2, critical current density Jc, irreversible magnetic field Hirr and ac losses Q, were measured by a home-made acs apparatus. We introduced briefly the physical background to study flux dynamics and non-linear properties of superconductors by acs method as well. |
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| Keywords: | MgB2 |
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