Title of article
Local measurement of current density by magneto-optical current reconstruction in normally and overpressure processed Bi-2223 tapes
Author/Authors
Y.، Huang, نويسنده , , D.C.، Larbalestier, نويسنده , , Y.، Yuan, نويسنده , , J.، Jiang, نويسنده , , X.Y.، Cai, نويسنده , , S.، Patnaik, نويسنده , , A.A.، Polyanskii, نويسنده , , E.E.، Hellstrom, نويسنده , , D.M.، Feldmann, نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-292
From page
293
To page
0
Abstract
Magneto-optical current reconstruction has been used for detailed analysis of the local critical current density (J/sub c/) variation in monocore Bi-2223 tapes. We find, even in high quality tapes with bulk transport j/sub c/~ 40 kA/cm/sup 2/ (77 K, 0 T), that there exist local regions which possess current densities of more than 200 kA/cm/sup 2/. Overpressure processing at 148 bar significantly improved J/sub c/ to 48 kA/cm/sup 2/ by improving the connectivity. For the overpressure-processed sample we find that the current distribution is more uniform and that the maximum local current density at 77 K is increased almost to 300 kA/cm/sup 2/.
Keywords
Prospective study , Abdominal obesity , waist circumference , Food patterns
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Serial Year
2003
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Record number
94660
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