The effect of carbon source on the properties of chemical doped MgB2 tapes

被引：0

作者：

Zhang, X. P. ^{[1
]}

Yao, C. ^{[1
]}

Wang, D. L. ^{[1
]}

Wang, C. D. ^{[1
]}

Gao, Z. S. ^{[1
]}

Wang, L. ^{[1
]}

Qi, Y. P. ^{[1
]}

Wang, C. L. ^{[1
]}

Ma, Y. W. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100080, Peoples R China

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2011年 / 471卷 / 21-22期

关键词：

MgB2; tapes; Chemical doping; Carbon source; Superconducting properties; CRITICAL-CURRENT DENSITIES; UPPER CRITICAL-FIELD; SUPERCONDUCTING PROPERTIES; IRREVERSIBILITY FIELD; MAGNESIUM DIBORIDE; ADDITION ROUTE; BULK MGB2; POWDER; WIRES;

D O I：

10.1016/j.physc.2011.05.140

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The doping effect of different carbon source on the properties of MgB2 tapes was compared using three typical dopants, nano-C, C-60, and C9H11NO. It is found that C-60 doped samples showed the highest carbon substitution ratio and resistivity, with the lowest T-c. For the nano-C doped samples, T-c did not drop so significant, which is only 2 K lower than that of the pure ones. Compared to C-60 and C9H11NO doped samples, the nano-C doped samples show a lower J(c) value at 5K. On the other hand, the C9H11NO doped samples show a high J(c) value at both 5 K and 20 K. This is a representative demonstration to the complex affecting factors on the J(c)-H property of MgB2 tapes. Detailed mechanism for the property difference in MgB2 induced by different chemical doping is discussed based on the systematically examined results. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：1124 / 1127

页数：4

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