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A novel technique to measure the magnetic relaxation of high-temperature superconducting films on ultra-short time scales

AuthorsPuig Molina, Teresa ; Pont, M.; Huggard, P. G.; Cruz, Fernando de la ; Prettl, W.; Muñoz, J. S.
Issue Date1998
PublisherInstitute of Physics Publishing
CitationSuperconductor Science and Technology 11: 680-685 (1998)
AbstractA technique to study magnetic flux relaxation in thin films of high-temperature superconductors at times arbitrarily close to the establishment of the critical state is presented. Heating of the film surface by a high-power laser pulse causes a collapse of the critical state profile, with the consequent expulsion of flux through the heated surface. This creates an emf between two contacts on the surface, the time integral of which is related to the number of vortices expelled. Experimental factors affecting the performance of such measurements are discussed.
Identifiersdoi: 10.1088/0953-2048/11/7/011
issn: 0953-2048
e-issn: 1361-6668
Appears in Collections:(ICMAB) Artículos
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