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|Author(s):||Daniel C. van der Laan; John (Jack) W. Ekin;|
|Title:||Large intrinsic effect of axial strain on the critical current of high-temperature superconductors for electric power applications|
|Published:||January 31, 2007|
|Abstract:||A remarkably large reversible reduction in the critical current of "second generation" high-temperature superconductors for electric power applications has been measured with a new technique over a wide range of mechanical strain. The effect amounts to a 40% reduction in critical current at 1% compressive strain in self-magnetic field, and is symmetric for compressive and tensile strains. The intrinsic effect is measured in highly aligned multigranular YBa2Cu3O7-d coated conductors made by different processes, including superconductors with nanoscale pinning centers. This effect and its magnitude are expected to have a significant impact on power applications and provide a useful new parameter for probing the fundamental nature of current transport in high-temperature superconductors.|
|Citation:||Applied Physics Letters|
|Pages:||pp. 052506-1 - 052506-3|
|Keywords:||critical current,electro-mechanical properties,high-temperature superconductors,reversible strain effect,Superconductivity,YBCO coated conductors|
|PDF version:||Click here to retrieve PDF version of paper (102KB)|