ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Nondestructive testing of superconducting blocks and thin films is a worth point in theirdevelopment and their industrial production. The most intrinsic characteristic to be tested is thecritical current, so is the maximum current can be carried in the superconducting state. Themeasurement of the current flowing through the samples could be done by direct transportexperiments but this means using specific samples, and only the mean current may be found.Distribution of current density in the sample is more relevant because it yields the map of inhomogeneityof the samples, and its effect in the current density distribution.Magnetic measurements have been developed by Hall scanning and magneto-optical effect,allowing the mapping of the component of the magnetic field perpendicular to a surface of thesample created by the current distribution. By solving the inverse Biot-Savart problem a map ofcurrent densities can be obtained. We will present the status of the magnetic measurements obtainedby exploring superconducting bulks and tapes magnetized by an external field and the magneticmap generated by the current carried through superconducting wires
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.47.1.pdf
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