TITLE

Influence of magnetic substrate in the transport critical current of superconducting tapes

AUTHOR(S)
Sanchez, Alvaro; Del-Valle, Nuria; Navau, Carles; Du-Xing Chen
PUB. DATE
August 2010
SOURCE
Applied Physics Letters;8/16/2010, Vol. 97 Issue 7, p072504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An important effect on the critical-current density Jc in a superconducting tape is found when the tape is above a soft ferromagnetic substrate, as is the case with many coated conductors. Here, a model is presented to analyze the complex magnetic interaction between the induced currents in the superconductor and the poles in the magnet. We find that transport Jc decreases at nonzero applied fields when there is a magnetic substrate and this reduction can be controlled by changing the magnet thickness. The model presented here can, therefore, become a useful tool for understanding and optimizing superconductor-magnet systems.
ACCESSION #
52997959

 

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