Magneto-optic imaging of flux penetration into an artificially granular high-Tc superconductor
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 1999

A YBa2Cu3O7- (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- 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

yttrium compounds

magneto-optical effects


high-temperature superconductors

superconducting thin films

barium compounds

granular structure

penetration depth (superconductivity)


M. R. Koblischka

L. Pust

P. Nalevka

M. Jirsa

T. H. Johansen

H. Bratsberg

Bengt Nilsson

Institutionen för fysik

Tord Claeson

Institutionen för fysik

Advances in Superconductivity XI. Proceedings of the 11th International Symposium on Superconductivity (ISS'98)

Vol. 2 693-696


Nanovetenskap och nanoteknik



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