Intergranular flux pinning in high temperature superconductors

A critical state model has been employed with an intergranular pinning force density which is independent of the local magnetic field, to calculate the critical transport current and the ac susceptibility of sintered YBaCuO as a function of temperature. The assumed temperature dependence of the pinn...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1989-12, Vol.162-164, p.1177-1178
Main Authors: Müller, K.-H., Ricketts, B.W., Macfarlane, J.C., Driver, R.
Format: Article
Language:English
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Summary:A critical state model has been employed with an intergranular pinning force density which is independent of the local magnetic field, to calculate the critical transport current and the ac susceptibility of sintered YBaCuO as a function of temperature. The assumed temperature dependence of the pinning force density is consistent with measurements on long tubular samples. The flux creep term of the effective intergranular pinning force causes a weak frequency dependence of the ac susceptibility.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(89)90641-2