Comparative study of Jc, flux pinning, and the influence of irradiation in Bi-2212 ribbon and single crystals

被引：0
|
作者：
Crossley, AL [1 ]
Everett, J
Wirth, G
Kadowaki, K
Morgan, C
Eastell, C
Grovenor, CRM
Caplin, AD
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Ctr High Temp Superconduct, London SW7 2BP, England
[2] Univ Oxford, Dept Mat, Oxford OX1 3PH, England
[3] Gesell Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
[4] Natl Res Inst Met, Tsukuba, Ibaraji 305, Japan
来源：
APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2: VOL 1: SMALL SCALE AND ELECTRONIC APPLICATIONS; VOL 2: LARGE SCALE AND POWER APPLICATIONS | 1997年 / 158期
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中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In the BiSrCaCuO (BSCCO) superconductors there has been considerable success in overcoming weak link problems, and at high temperatures intra-grain flux motion is thought to be the dominant dissipation mechanism. Polycrystalline BSCCO tapes have critical current densities (J(c)) at high temperatures that are large compared with those in BSCCO single crystals. In order to further improve J(c) in the tapes, it is essential to identify the additional flux pinning mechanisms in them. The microstructural and electrical homogeneity of Bi2Sr2CaCu2O8+d ribbon (Bi-2212/Ag) provides a good basis for comparison with of Bi-2212 single crystals, in order to investigate and highlight the pinning in polycrystalline ribbons. We report a detailed study on the effect of irradiation on J(c) in both Bi-2212 single crystals and Bi-2212/Ag ribbons using magnetisation measurements. Information regarding the intra-granular flux pinning of the grains within the ribbon has been obtained.
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页码：1157 / 1160
页数：4
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