Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9841613 | Physica C: Superconductivity and its Applications | 2005 | 5 Pages |
Abstract
One-dimensional artificial pinning centers (APCs) were introduced perpendicular to the surface of the c-axis oriented YBa2Cu3O7âδ (YBCO) films by using Y2O3 nano-islands which were distributed on the substrates. In-field Jc of the films was remarkably enhanced by this method and reached to 0.12 MA/cm2 (77 K, Bâ¥c, 5 T), which was 2-2.5 times higher than that of a pure YBCO film. The present films had a large Jc peak when the field was applied close to the c-axis. The results indicate that the strong APCs were introduced into the YBCO films. The vortex pinning by the present APCs is discussed based on the accommodation angle of the vortices.
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Condensed Matter Physics
Authors
K. Matsumoto, T. Horide, P. Mele, Y. Yoshida, M. Mukaida, A. Ichinose, S. Horii,