A reappraisal of irreversible behaviour in the intermediate state of a type-I superconductor

The nonequilibrium behaviour of the intermediate state of non-ellipsoidal specimens of type-I superconductors is well documented. We present the identification of a signal due to an octupole moment of this intermediate state in the magnetization measurements on a disc shaped Pb specimen. We can also...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1990-10, Vol.170 (5), p.431-436
Main Authors: Grover, A.K., Kumar, Ravi, Chaddah, P., Subramanian, C.K., Sankaranarayanan, V.
Format: Article
Language:English
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Summary:The nonequilibrium behaviour of the intermediate state of non-ellipsoidal specimens of type-I superconductors is well documented. We present the identification of a signal due to an octupole moment of this intermediate state in the magnetization measurements on a disc shaped Pb specimen. We can also identify a quasi-irreversibility temperature, like the HTSC materials, in the magnetization data on a Pb disc. However, its precise value at a given H depends on the orientation of the plane of the disc with respect to the applied field and it cannot be treated as a material characteristics of Pb.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(90)90012-4