van der Laan, D.
and Ekin, J.
(2007),
Large intrinsic effect of axial strain on the critical current of high-temperature superconductors for electric power applications, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=32463
(Accessed November 21, 2024)
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Large intrinsic effect of axial strain on the critical current of high-temperature superconductors for electric power applications
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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
Volume
90
Pub Type
Journals
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Keywords
critical current, electro-mechanical properties, high-temperature superconductors, reversible strain effect, Superconductivity, YBCO coated conductors
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Created January 30, 2007, Updated October 12, 2021