Characterization of superconductors using magnetooptic techniques

Direct observations and measurements of spatial magnetic flux distributions on the surfaces of YBaCuO superconducting thin films and thin single crystals realized under application of external magnetic field and transport current are accomplished using magneto-optical indicators. These investigation...

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Bibliographic Details
Published inJournal of alloys and compounds Vol. 195; pp. 499 - 502
Main Authors Indenbom, M.V., Forkl, A., Habermeier, H.-U., Kronmüller, H.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Lausanne Elsevier B.V 10.05.1993
Elsevier
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
External field
Critical current density
Magnetic flux
Critical current
Spatial distribution
Magnetic field
Barium Copper Yttrium Oxides Mixed
High temperature superconductor
Thin film
Magnetic properties
Surface
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Summary:Direct observations and measurements of spatial magnetic flux distributions on the surfaces of YBaCuO superconducting thin films and thin single crystals realized under application of external magnetic field and transport current are accomplished using magneto-optical indicators. These investigations are compared with theoretical calculations yielding critical current densities. Special attention is paid to the influence of defects on the magnetic properties. Furthermore, specific features of flux penetration into flat superconductors are revealed.
ISSN:0925-8388
1873-4669
DOI:10.1016/0925-8388(93)90786-M