Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9841598 | Physica C: Superconductivity and its Applications | 2005 | 4 Pages |
Abstract
We have fabricated RE1Ba2Cu3O7âδ (RE = Er, Dy, Gd) and YBa2Cu3O7âδ (Y-123) superconductor films with various thickness on pulsed laser deposition (PLD)-CeO2/ion-beam assisted deposition (IBAD)-Gd-Zr-oxide (GZO)/metal substrates by PLD method and investigated the dependence of critical current density (Jc) on applied magnetic field. In order to fabricate a practical high critical current (Ic) coated conductor, we used metal substrate tapes with ÎÏ value of 3.7°-7.0° fabricated by the technique of a self-epitaxy method. GdBa2Cu3O7âδ (Gd-123) films showed higher Jc in magnetic fields than that for Y-123 films. Jc value of the Gd-123 film was 179,000 A/cm2 at 3 T and 34,700 A/cm2 at 6 T at 77 K. Transmission electron microscope (TEM) observation showed that Gd-123 film had a more defective structure than Y-123 film. These structures may be attributed to high Jc in high magnetic field.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Kazuhiro Takahashi, Masaya Konishi, Akira Ibi, Hiroyuki Iwai, Takemi Muroga, Seiki Miyata, Tomonori Watanabe, Yutaka Yamada, Yuh Shiohara,