Domain Structures in Superconductors

Synopsis: Shows the intermediate-state structures of an evaporated superconducting lead film of 7mm thickness in a vertically applied magnetic field of variable amplitude. The domains have been made visible by means of the Faraday effect in thin evaporated EuS/EuF2 films. Shows the following: 1) The penetration of magnetic flux, the formation of normal meanders and of normal honeycomb-like cells upon increasing the magnetic field amplitude; 2) The nucleation of superconducting filaments, the formation of superconducting meanders and normal domains issuing from the sample on decreasing the magnetic-field amplitude. 3) The growth, the shrinkage and the disappearance of superconducting filaments upon slowly oscillating the magnetic field amplitude. An Encyclopaedia Cinematographica film.
Language: English
Country: Germany
Medium: Film; Film. 16mm. st. b&w. 5 min.
Technical information: Black-and-white / Sound
Year of production: 1972
Availability: Hire
Documentation: Booklet in German supplied.
Uses: Illustrative material for students of metallurgy.*
Subjects: Engineering; Physics
Keywords: electronics; metallurgy; superconductivity

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