Critical currents of 85 K Bi-Sr-Ca-Cu-O

We report critical current densities of pressed and sintered pellets of Bi-Sr-Ca-Cu-O measured by transport current and magnetometer. For a sample sintered at 860 °C, the critical current density inferred from the magnetization was 40 times greater than the measured transport current density. This r...

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Bibliographic Details
Published in:Materials letters 1988, Vol.6 (11), p.390-392
Main Authors: Wagner, G.R., Talvacchio, J., Panson, A.J.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
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Summary:We report critical current densities of pressed and sintered pellets of Bi-Sr-Ca-Cu-O measured by transport current and magnetometer. For a sample sintered at 860 °C, the critical current density inferred from the magnetization was 40 times greater than the measured transport current density. This result and comparisons with the magnetization of a crushed pellet indicate that the effects of granularity are as severe as in polycrystalline YBa 2Cu 3O 7.
ISSN:0167-577X
1873-4979
DOI:10.1016/0167-577X(88)90036-5