Magneto-optic imaging of flux penetration into an artificially granular high-T c superconductor

M. R. Koblischka,M. Jirsa,T. Claeson,P. Nalevka,H. Bratsberg,L. Pust,T. H. Johansen,B. Nilsson

doi:10.1007/978-4-431-66874-9_159

Magneto-optic imaging of flux penetration into an artificially granular high-T c superconductor

M. R. Koblischka, M. Jirsa + Show 6 more

https://doi.org/10.1007/978-4-431-66874-9_159

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Publication Date: Jan 1, 1999

Citations: 1

Affiliation: Czech Academy of Sciences, Institute of Physics, Chalmers University of Technology, University of Oslo

#Low Field Peak #Local Field Distributions + Show 8 more

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Abstract

A YBa2Cu3O7-δ (YBCO) thin film is patterned into a hexagonal close packed lattice of disks which are touching each other at the circumferences in order to enable the flow of an intergranular current. Such a sample was suggested by Koblischka et al. [Appl Phys Lett 70, 514 (1997)] as a model for a layered granular structure like in a Bi2Sr2Ca2Cu3O10+δ tape. Magnetization measurements reveal an anomalous position of the low field peak (central peak) similar to the tapes. Magneto-optic imaging is employed to visualize the local field distributions.

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