HIGH CRITICAL CURRENTS IN AG-BSCCO(2223) TAPES - ARE THE GRAIN-BOUNDARIES REALLY WEAK-LINKS

Authors
CASSIDY SM COHEN LF CUTHBERT MN LAVERTY JR PERKINS GK CAPLIN AD DOU SX GUO YC LIU HK WOLF EL
Citation
Sm. Cassidy et al., HIGH CRITICAL CURRENTS IN AG-BSCCO(2223) TAPES - ARE THE GRAIN-BOUNDARIES REALLY WEAK-LINKS, Journal of alloys and compounds, 195(1-2), 1993, pp. 503-506
Citations number
12
Categorie Soggetti
Chemistry Physical","Metallurgy & Mining","Material Science
Journal title
Journal of alloys and compounds → ACNP
ISSN journal
09258388
Volume
195
Issue
1-2
Year of publication
1993
Pages
503 - 506
Database
ISI
SICI code
0925-8388(1993)195:1-2<503:HCCIAT>2.0.ZU;2-W
Abstract
The remarkable improvement of the superconducting properties of polycr ystalline BSCCO(2223) when processed into Ag-clad tapes has been inves tigated with magnetisation measurements. The tape bulk critical curren t density has been compared directly with the intragrain critical curr ent of the crystalline powder extracted from the tapes. The results sh ow that two factors contribute to the excellent tape performance: Intr agranular flux pinning is much stronger than might be expected from si ngle crystal data, and the grain boundaries display no evidence of bei ng 'weak-links'.