Flux-pinning enhancement in Ag-sheathed Bi-2223 tapes by nanometer-SiC addition

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	Flux-pinning enhancement in Ag-sheathed Bi-2223 tapes by nanometer-SiC addition
	Z. Q. Yang; X. D. Su; G. W. Qiao; Y. C. Guo; S. X. Dou; F. R. de Boer
	1999
发表期刊	Physica C-Superconductivity and Its Applications
ISSN	0921-4534
卷号	325 期号:3-4 页码:136-142
摘要	We have studied the influence of nanometer SIC particles on the flux pinning and the magnetization critical current density J(cm) of Ag-sheathed (Bi,Pb)(2)Sr2Ca2Cu3Ox superconducting tapes. The results show that below 40 K SiC particles up to 0.5 wt.% introduce additional flux-pinning centres, and enhance J(cm) to different extent dependent on the temperature and applied magnetic field. For the tapes with SiC addition up to 0.5 wt.%, the magnetization critical current density J(cm) at 5 K in applied fields up to 50 kOe is twice that of the tape without SiC, for both H parallel to c and H parallel to ab. A study of the magnetization decay shows that tape with 0.15 wt.% nanometer SiC particles has a reduced flux-creep rate and increased pinning potential compared with the tape without SiC. The enhanced pinning properties can be attributed to the small SIC particles dispersed in the superconducting matrix and to the secondary defects at the interface between SiC particles and the superconducting matrix created by the introduction of the SiC particles. (C) 1999 Elsevier Science B.V. All rights reserved.
部门归属	acad sinica, inst met res, shenyang 110015, peoples r china. univ wollongong, inst superconducting & elect mat, wollongong, nsw 2522, australia. univ amsterdam, van de waals zeeman inst, nl-1018 xe amsterdam, netherlands.;yang, zq (reprint author), acad sinica, inst met res, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Bi-2223 Nanometer Sic Flux Pinning Critical-current Density Columnar Defects Phase Evolution Superconductor Irradiation Composites
URL	查看原文
WOS记录号	WOS:000084325400004
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37550
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Yang,X. D. Su,G. W. Qiao,et al. Flux-pinning enhancement in Ag-sheathed Bi-2223 tapes by nanometer-SiC addition[J]. Physica C-Superconductivity and Its Applications,1999,325(3-4):136-142.
APA	Z. Q. Yang,X. D. Su,G. W. Qiao,Y. C. Guo,S. X. Dou,&F. R. de Boer.(1999).Flux-pinning enhancement in Ag-sheathed Bi-2223 tapes by nanometer-SiC addition.Physica C-Superconductivity and Its Applications,325(3-4),136-142.
MLA	Z. Q. Yang,et al."Flux-pinning enhancement in Ag-sheathed Bi-2223 tapes by nanometer-SiC addition".Physica C-Superconductivity and Its Applications 325.3-4(1999):136-142.