Continuous reel-to-reel measurement of critical currents of coated conductors

Grimaldi, G.; Bauer, M.; Kinder, H.
December 2001
Applied Physics Letters;12/24/2001, Vol. 79 Issue 26, p4390
Academic Journal
We demonstrate that magnetization measurements by Hall probe arrays are well suited for the reel-to-reel determination of critical currents along long lengths of coated conductors. The technique is contact-free, fast, simple, and it has a high spatial resolution. A quantitative measure of the critical current as a function of position was obtained by fitting a simple critical state model to the field distribution. The technique is demonstrated for YBa[sub 2]Cu[sub 3]O[sub 7] films on single-crystal substrates and then applied to samples of coated conductors. © 2001 American Institute of Physics.


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