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Predictive model for critical current density of Ag-sheathed Bi2Sr2Ca1Cu2O8 composite tapes with fabrication defects

✍ Scribed by S. Patel; T. Haugan; S. Chen; F. Wong; E. Narumi; D.T. Shaw

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 599 KB
Volume: 34
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(94)90215-1

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✦ Synopsis

Fabrication of long Ag-sheathed Bi2Sr2CalCu2Oa composite tapes is sometimes accompanied by the distribution of large bubble-type defects located at relatively uniform intervals along the length of the conductor. The size, shape and number of these defects dictate the critical current density and eventually the overall quality of the tape. The effect of defect size and concentration on the overall critical current density is theoretically modelled. Using experimental data on the transport properties of short conductor samples with a defect of known dimensions, the model can be used to predict the critical current density of a long conductor tape by visual inspection of the number, size and location of these defects along the conductor length.

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