Flux pinning enhancement in ferromagnetic and superconducting thin-film multilayers
- Jan, D. B.
- Coulter, J. Y.
- Hawley, M. E.
- Bulaevskii, L. N.
- Maley, M. P.
- Jia, Q. X.
- Maranville, B. B.
- Hellman, F.
- Pan, Xiaoqing
Publication date
February 2003
DOI Publisher
AIP Publishing ISSN
0003-6951 Language
English Citation count (estimate)
39Abstract
Flux pinning in high-temperature superconductors such as YBa2Cu3O7−xYBa2Cu3O7−x (YBCO) in the past has been accomplished by pinning the vortex cores. We demonstrate magnetic-domain-induced flux pinning of the magnetic flux of vortices in a ferromagnet-superconductor bilayer consisting of CoPt grown on YBCO, where the ferromagnet has uniaxial perpendicular magnetic anisotropy and a random domain structure. We observe an improvement of the critical current due to magnetic pinning at temperatures close to the transition temperature. © 2003 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/71072/2/APPLAB-82-5-778-1.pd
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