| Author(s): |
Daniel C. van der Laan; John (. 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 |
| Volume: |
90 |
| Pages: |
pp. 052506-1 - 052506-3 |
| Keywords: |
critical current;electro-mechanical properties;high-temperature superconductors;reversible strain effect;Superconductivity;YBCO coated conductors |
| Research Areas: |
Electromagnetics |
| PDF version: |
 Click here to retrieve PDF version of paper (100KB) |
