Simultaneous introduction of scattering and pinning in organic rare-earth salt doped MgB2 tapes

被引：18

作者：

Gao, Zhaoshun ^{[1
]}

Wang, Dongliang ^{[1
]}

Zhang, Xianping ^{[1
]}

Ma, Yanwei ^{[1
]}

Awaji, S. ^{[2
]}

Nishijima, G. ^{[2
]}

Watanabe, K. ^{[2
]}

Fluekiger, R. ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China

[2] Tohoku Univ, Inst Mat Res, High Field Lab Superconducting Mat, Sendai, Miyagi 9808577, Japan

[3] Univ Geneva, Dept Condensed Matter Phys, CH-1211 Geneva 4, Switzerland

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2010年 / 23卷 / 04期

基金：

中国国家自然科学基金;

关键词：

CRITICAL-CURRENT DENSITY; SUPERCONDUCTOR;

D O I：

10.1088/0953-2048/23/4/045024

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

MgB2 tapes with organic rare-earth salt additions were prepared by the in situ powder-in-tube processing method. Compared to the undoped tapes, the transport J(c) are greatly improved by organic rare-earth salt doping. In addition, magnetization measurements showed an enhancement of flux pinning. Organic rare-earth salt doping not only enhances the upper critical field by increasing electron scattering, but also introduces precipitates and structural defects to improve the flux pinning. The results suggest that organic rare-earth salt has to be considered as a promising dopant for enhancing the current capacity of MgB2 conductors.

引用

页数：4

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