Can I read Magnetically investigated E–J characteristics of Bi-2212/Ag tape conductors on EtoBox?

Magnetically investigated E–J characteristics of Bi-2212/Ag tape conductors by H. Kumakura; H. Kitaguchi; T. Mochiku; K. Togano; S. Okayasu is a Physics and Astronomy article available to read on EtoBox.

What is Magnetically investigated E–J characteristics of Bi-2212/Ag tape conductors about?

We evaluated the E-J characteristics of several Bi-2212rAg tapes and a Bi-2212 single crystal by the magnetization Ž . Ž . method. Tapes were prepared under oxygen partial pressure of 0.2 atm 20% O and 1.0 atm 100% O . 180 MeV 2 2 Cu 11q -irradiated tapes were also prepared. The slope of log E-log J curves for the tapes was larger than that of the single crystal at all temperatures and fields investigated. At 5 K, the log E-log J curves of all samples showed linear behavior. The slope of the curve with an n-value of ; 45 was obtained in low fields for the 20% O sample. This n-value decreased 2 to ; 19 at 4 T. The 100% O sample showed larger n-values than the 20% O sample. This enhancement of n-values is 2 2 attributed to the improved pinning characteristics introduced by an over-doping of carriers. Cu 11q irradiation significantly enhanced n-values at low fields. However, the large n-value decreased rapidly with increasing the field, and, at 4 T, the n-value of the irradiated sample was nearly equal to that of the non-irradiated sample. At 25 K, log E-log J curves were no longer linear in fields above ; 1.5 T except for the irradiated sample.

Who reads Magnetically investigated E–J characteristics of Bi-2212/Ag tape conductors?

Author

H. Kumakura; H. Kitaguchi; T. Mochiku; K. Togano; S. Okayasu

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4534)

Published

1999

Language

EN

Field

Physics and Astronomy (Physical Sciences)