Title :
High resolution magneto-optical study of superconducting thin films and devices
Author :
Flament, S. ; Warsito ; Cordier, C. ; Méchin, L. ; Bloyet, D.
Author_Institution :
Caen Univ., France
fDate :
3/1/2001 12:00:00 AM
Abstract :
Magneto-optical (MO) studies have been carried out on superconducting thin films. In this paper, we give the features that determine the signal to noise ratio of the imaging system and optimize the image contrast. The flux distribution of vortices in thin films are given, which determines the requirements to satisfy for vortex visualization using a MO layer. Images of partial flux penetration through the slit of a DC SQUID are presented. Flux focusing efficiency can be deduced from these Images
Keywords :
flux flow; flux pinning; flux-line lattice; high-temperature superconductors; magneto-optical effects; superconducting devices; superconducting thin films; flux distribution; flux focusing efficiency; high temperature superconductor; image contrast; imaging system; partial flux penetration; signal to noise ratio; superconducting devices; superconducting thin films; vortex visualization; vortices distribution; Charge coupled devices; High-resolution imaging; Image resolution; Magnetooptic devices; Optical imaging; Optical polarization; Scanning electron microscopy; Signal to noise ratio; Spatial resolution; Superconducting thin films;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
