期刊
CERAMICS INTERNATIONAL
卷 42, 期 16, 页码 18347-18351出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.08.166
关键词
Nano-sized Bi2O3; Flux pinning centers; Microstructure; Transport critical current density
资金
- Universiti Kebangsaan Malaysia [GP-K005338]
- Ministry of Higher Education, Malaysia [FRGS/2/2013/SG02/UKM/01/1]
- Thamar University, Yemen
Ag sheathed superconductor tapes with starting composition (Bi, Pb)-2223(Bi2O3)(0.01) were prepared. Bi2O3 with average size 150 nm was used in this work. The Bi2O3 amount was chosen based on our initial study on nano-sized Bi2O3 added pellets which showed an optimal superconducting property for 0.01 wt% addition. Non-added tapes were also prepared for comparison. The tapes were investigated by X-ray diffraction method, scanning electron microscopy and transport critical current density, J(c) measurements (30 K to 77 K). The influence of different sintering times (50, 100, and 150 h) on J(c) under applied magnetic field (0-0.75 Tat 77 K) parallel and perpendicular to the surface of the tapes was also investigated. J(c) of added tapes was found to increase significantly as compared with the non-added tapes. The Bi2O3 added tapes sintered for 150 h exhibited the highest J(c) at 30 K of 57,900 A/cm(2) as compared with 19,400 A/cm(2) for the non-added tapes sintered for 100 h. The improvements in flux pinning and connectivity between grains due to nano Bi2O3 addition led to the enhancement of J(c). (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据