Frequency dependent magnetisation and susceptibility of YBCO thick-film rings

The ac-susceptibility and low-field magnetisation of textured YBCO thick-film ring samples are shown to be strongly frequency dependent. measurements are interpreted in terms of an “eddy-current” loss model with effective time constant comparable with measurement frequencies. Numerical computation o...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1991-12, Vol.185, p.1823-1824
Main Authors: Gencer, A., Gough, C.E., Shields, T.C., Abell, J.S.
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:The ac-susceptibility and low-field magnetisation of textured YBCO thick-film ring samples are shown to be strongly frequency dependent. measurements are interpreted in terms of an “eddy-current” loss model with effective time constant comparable with measurement frequencies. Numerical computation of the magnetic properties are illustrated for idealised V/I characteristics of the thick film including thermally activated flux flow.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(91)91037-5