Influence of Sm2Ba4CuBiOy phase content on Jc of SmBa2Cu3O7/Sm2Ba4CuBiOy nano-composites

被引：8
作者：
Babu, N. Hari [1 ,2 ,3 ]
Iida, K. [2 ,3 ]
Matthews, L. S. [2 ,3 ]
Shi, Y. [2 ,3 ]
Cardwell, D. A. [2 ,3 ]
机构：
[1] Brunel Univ, BCAST, Uxbridge UB8 3PH, Middx, England
[2] Univ Cambridge, Irc Superconduct, Cambridge CB3 0HE, England
[3] Univ Cambridge, Dept Engn, Cambridge CB3 0HE, England
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2008年 / 151卷 / 01期
关键词：
bulk superconductors; REBCO; flux pinning; nano-particles;
D O I：
10.1016/j.mseb.2008.01.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Presence of various nano-scale Y2Ba4CuMOy phase inclusions in YBa2Cu3O7-delta phase matrix are shown to improve magnetic flux pinning over wide range of magnetic fields. We first fabricate single phase of Sm2Ba4CuBiOy (Sm-2411) using a solid-state reaction and then introduced them into SmBCO single grains. Top seeded melt growth (TSMG) has been used to grow SmBCO single grains in air atmosphere. A significant improvement in J(c) is observed, over wide magnetic fields, for single grains containing Sm-2411nano-phase inclusions when compared to that of SmBa2Cu3O7-delta/Sm2BaCuO5 composites. When compared to YBCO nano-composites, SmBCO composites are shown to exhibit high J(c) at medium range of magnetic fields (1-2T) at 77 K. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：21 / 24
页数：4
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